32970640 has 20 divisors (see below), whose sum is σ = 76656924. Its totient is φ = 13188224.

The previous prime is 32970631. The next prime is 32970653. The reversal of 32970640 is 4607923.

It can be written as a sum of positive squares in 2 ways, for example, as 15397776 + 17572864 = 3924^2 + 4192^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205987 + ... + 206146.

Almost surely, 2^32970640 is an apocalyptic number.

It is an amenable number.

32970640 is an abundant number, since it is smaller than the sum of its proper divisors (43686284).

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

32970640 is a wasteful number, since it uses less digits than its factorization.

32970640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412146 (or 412140 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 32970640 is about 5742.0066178994. The cubic root of 32970640 is about 320.6582803225.

The spelling of 32970640 in words is "thirty-two million, nine hundred seventy thousand, six hundred forty".