Search a number
-
+
457660480 = 26510913121
BaseRepresentation
bin11011010001110…
…101100001000000
31011220011120011011
4123101311201000
51414130113410
6113225130304
714225023054
oct3321654100
91156146134
10457660480
11215379102
12109329994
1373a7c724
1444ad3c64
152a2a318a
hex1b475840

457660480 has 56 divisors (see below), whose sum is σ = 1099886040. Its totient is φ = 181370880.

The previous prime is 457660403. The next prime is 457660493. The reversal of 457660480 is 84066754.

It can be written as a sum of positive squares in 4 ways, for example, as 22353984 + 435306496 = 4728^2 + 20864^2 .

It is a super-2 number, since 2×4576604802 = 418906229907660800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28320 + ... + 41440.

Almost surely, 2457660480 is an apocalyptic number.

457660480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 457660480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (549943020).

457660480 is an abundant number, since it is smaller than the sum of its proper divisors (642225560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

457660480 is a wasteful number, since it uses less digits than its factorization.

457660480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13247 (or 13237 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 457660480 is about 21393.0007245361. Note that the first 3 decimals coincide. The cubic root of 457660480 is about 770.6333575692.

It can be divided in two parts, 4576 and 60480, that added together give a palindrome (65056).

The spelling of 457660480 in words is "four hundred fifty-seven million, six hundred sixty thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 109 160 218 320 436 545 872 1090 1744 2180 3488 4360 6976 8720 13121 17440 26242 34880 52484 65605 104968 131210 209936 262420 419872 524840 839744 1049680 1430189 2099360 2860378 4198720 5720756 7150945 11441512 14301890 22883024 28603780 45766048 57207560 91532096 114415120 228830240 457660480