20697932 has 6 divisors (see below), whose sum is σ = 36221388. Its totient is φ = 10348964.

The previous prime is 20697923. The next prime is 20697977. The reversal of 20697932 is 23979602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2587238 + ... + 2587245.

It is an arithmetic number, because the mean of its divisors is an integer number (6036898).

Almost surely, 2^20697932 is an apocalyptic number.

It is an amenable number.

20697932 is a deficient number, since it is larger than the sum of its proper divisors (15523456).

20697932 is a wasteful number, since it uses less digits than its factorization.

20697932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5174487 (or 5174485 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 20697932 is about 4549.4979942846. The cubic root of 20697932 is about 274.5631941548.

It can be divided in two parts, 2069 and 7932, that added together give a palindrome (10001).

The spelling of 20697932 in words is "twenty million, six hundred ninety-seven thousand, nine hundred thirty-two".