32972290 has 16 divisors (see below), whose sum is σ = 63915768. Its totient is φ = 12174336.

The previous prime is 32972281. The next prime is 32972293. The reversal of 32972290 is 9227923.

It can be written as a sum of positive squares in 4 ways, for example, as 17816841 + 15155449 = 4221^2 + 3893^2 .

It is not an unprimeable number, because it can be changed into a prime (32972293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126687 + ... + 126946.

Almost surely, 2^32972290 is an apocalyptic number.

32972290 is a deficient number, since it is larger than the sum of its proper divisors (30943478).

32972290 is a wasteful number, since it uses less digits than its factorization.

32972290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253653.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 32972290 is about 5742.1502940972. The cubic root of 32972290 is about 320.6636292970.

The spelling of 32972290 in words is "thirty-two million, nine hundred seventy-two thousand, two hundred ninety".