491029524 has 36 divisors (see below), whose sum is σ = 1264637556. Its totient is φ = 160587648.

The previous prime is 491029523. The next prime is 491029529. The reversal of 491029524 is 425920194.

It can be written as a sum of positive squares in 2 ways, for example, as 151733124 + 339296400 = 12318^2 + 18420^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×491029524² = 482219986879333152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491029523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126769 + ... + 130584.

It is an arithmetic number, because the mean of its divisors is an integer number (35128821).

Almost surely, 2^491029524 is an apocalyptic number.

It is an amenable number.

491029524 is an abundant number, since it is smaller than the sum of its proper divisors (773608032).

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

491029524 is a wasteful number, since it uses less digits than its factorization.

491029524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257416 (or 257411 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 491029524 is about 22159.1859958799. The cubic root of 491029524 is about 788.9252725518.

The spelling of 491029524 in words is "four hundred ninety-one million, twenty-nine thousand, five hundred twenty-four".