491657224 has 32 divisors (see below), whose sum is σ = 991036800. Its totient is φ = 227931840.

The previous prime is 491657209. The next prime is 491657239. The reversal of 491657224 is 422756194.

It is an interprime number because it is at equal distance from previous prime (491657209) and next prime (491657239).

It is a super-2 number, since 2×491657224² = 483453651822772352, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27267 + ... + 41554.

It is an arithmetic number, because the mean of its divisors is an integer number (30969900).

Almost surely, 2^491657224 is an apocalyptic number.

It is an amenable number.

491657224 is an abundant number, since it is smaller than the sum of its proper divisors (499379576).

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

491657224 is a wasteful number, since it uses less digits than its factorization.

491657224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68893 (or 68889 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 491657224 is about 22173.3448987743. The cubic root of 491657224 is about 789.2612995489.

The spelling of 491657224 in words is "four hundred ninety-one million, six hundred fifty-seven thousand, two hundred twenty-four".