20697332 has 24 divisors (see below), whose sum is σ = 37959936. Its totient is φ = 9855648.

The previous prime is 20697323. The next prime is 20697337. The reversal of 20697332 is 23379602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20697337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33458 + ... + 34070.

It is an arithmetic number, because the mean of its divisors is an integer number (1581664).

Almost surely, 2^20697332 is an apocalyptic number.

It is an amenable number.

20697332 is a deficient number, since it is larger than the sum of its proper divisors (17262604).

20697332 is a wasteful number, since it uses less digits than its factorization.

20697332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 20697332 is about 4549.4320524655. The cubic root of 20697332 is about 274.5605410797.

The spelling of 20697332 in words is "twenty million, six hundred ninety-seven thousand, three hundred thirty-two".