Search a number
-
+
481745880 = 233457111931
BaseRepresentation
bin11100101101101…
…101101111011000
31020120111020010000
4130231231233120
51441311332010
6115445253000
714636525640
oct3455555730
91216436100
10481745880
11227a298a0
12115404160
1378a63545
1447da3520
152c45e7c0
hex1cb6dbd8

481745880 has 320 divisors, whose sum is σ = 2019790080. Its totient is φ = 100051200.

The previous prime is 481745867. The next prime is 481745903. The reversal of 481745880 is 88547184.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 248515 + ... + 250445.

It is an arithmetic number, because the mean of its divisors is an integer number (6311844).

Almost surely, 2481745880 is an apocalyptic number.

481745880 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 481745880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009895040).

481745880 is an abundant number, since it is smaller than the sum of its proper divisors (1538044200).

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

481745880 is a wasteful number, since it uses less digits than its factorization.

481745880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1959 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The square root of 481745880 is about 21948.7102126754. The cubic root of 481745880 is about 783.9216697738.

The spelling of 481745880 in words is "four hundred eighty-one million, seven hundred forty-five thousand, eight hundred eighty".