Search a number
-
+
7770490 = 257138539
BaseRepresentation
bin11101101001000101111010
3112121210002221
4131221011322
53442123430
6434314254
7123022330
oct35510572
915553087
107770490
1144280a2
12272898a
1317c0b30
141063b50
15a3757a
hex76917a

7770490 has 32 divisors (see below), whose sum is σ = 17216640. Its totient is φ = 2458944.

The previous prime is 7770473. The next prime is 7770509. The reversal of 7770490 is 940777.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3360 + ... + 5179.

It is an arithmetic number, because the mean of its divisors is an integer number (538020).

Almost surely, 27770490 is an apocalyptic number.

7770490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7770490 is an abundant number, since it is smaller than the sum of its proper divisors (9446150).

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

7770490 is a wasteful number, since it uses less digits than its factorization.

7770490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8566.

The product of its (nonzero) digits is 12348, while the sum is 34.

The square root of 7770490 is about 2787.5598648280. The cubic root of 7770490 is about 198.0688295887.

The spelling of 7770490 in words is "seven million, seven hundred seventy thousand, four hundred ninety".

Divisors: 1 2 5 7 10 13 14 26 35 65 70 91 130 182 455 910 8539 17078 42695 59773 85390 111007 119546 222014 298865 555035 597730 777049 1110070 1554098 3885245 7770490