20852964 has 60 divisors (see below), whose sum is σ = 59479728. Its totient is φ = 6318000.

The previous prime is 20852947. The next prime is 20852971. The reversal of 20852964 is 46925802.

It is a happy number.

It is a super-2 number, since 2×20852964² = 869692215170592, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 639 + ... + 6489.

Almost surely, 2^20852964 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 20852964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29739864).

20852964 is an abundant number, since it is smaller than the sum of its proper divisors (38626764).

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

20852964 is a wasteful number, since it uses less digits than its factorization.

20852964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878 (or 5867 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 20852964 is about 4566.5045713324. The cubic root of 20852964 is about 275.2470023209.

The spelling of 20852964 in words is "twenty million, eight hundred fifty-two thousand, nine hundred sixty-four".