491662152 has 24 divisors (see below), whose sum is σ = 1331585190. Its totient is φ = 163887360.

The previous prime is 491662141. The next prime is 491662177. The reversal of 491662152 is 251266194.

It can be written as a sum of positive squares in only one way, i.e., 430728516 + 60933636 = 20754^2 + 7806^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×491662152² = 483463343418542208, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3414249 + ... + 3414392.

Almost surely, 2^491662152 is an apocalyptic number.

It is an amenable number.

491662152 is an abundant number, since it is smaller than the sum of its proper divisors (839923038).

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

491662152 is a wasteful number, since it uses less digits than its factorization.

491662152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6828653 (or 6828646 counting only the distinct ones).

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

The square root of 491662152 is about 22173.4560229117. The cubic root of 491662152 is about 789.2639365261.

The spelling of 491662152 in words is "four hundred ninety-one million, six hundred sixty-two thousand, one hundred fifty-two".