32157668 has 12 divisors (see below), whose sum is σ = 57047340. Its totient is φ = 15858432.

The previous prime is 32157667. The next prime is 32157721. The reversal of 32157668 is 86675123.

It can be written as a sum of positive squares in 2 ways, for example, as 14500864 + 17656804 = 3808^2 + 4202^2 .

It is a super-2 number, since 2×32157668² = 2068231222396448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32157667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54773 + ... + 55356.

It is an arithmetic number, because the mean of its divisors is an integer number (4753945).

Almost surely, 2^32157668 is an apocalyptic number.

It is an amenable number.

32157668 is a deficient number, since it is larger than the sum of its proper divisors (24889672).

32157668 is a wasteful number, since it uses less digits than its factorization.

32157668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110206 (or 110204 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 32157668 is about 5670.7731395287. The cubic root of 32157668 is about 318.0007779209. Note that the first 3 decimals are identical.

The spelling of 32157668 in words is "thirty-two million, one hundred fifty-seven thousand, six hundred sixty-eight".