20693952 has 84 divisors (see below), whose sum is σ = 60981336. Its totient is φ = 6704640.

The previous prime is 20693941. The next prime is 20693993. The reversal of 20693952 is 25939602.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20827 + ... + 21797.

Almost surely, 2^20693952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20693952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30490668).

20693952 is an abundant number, since it is smaller than the sum of its proper divisors (40287384).

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

20693952 is a wasteful number, since it uses less digits than its factorization.

20693952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 20693952 is about 4549.0605623579. The cubic root of 20693952 is about 274.5455944648.

The spelling of 20693952 in words is "twenty million, six hundred ninety-three thousand, nine hundred fifty-two".