20843652 has 12 divisors (see below), whose sum is σ = 48635216. Its totient is φ = 6947880.

The previous prime is 20843629. The next prime is 20843653. The reversal of 20843652 is 25634802.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20843653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868474 + ... + 868497.

Almost surely, 2^20843652 is an apocalyptic number.

It is an amenable number.

20843652 is an abundant number, since it is smaller than the sum of its proper divisors (27791564).

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

20843652 is a wasteful number, since it uses less digits than its factorization.

20843652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736978 (or 1736976 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 20843652 is about 4565.4848592455. The cubic root of 20843652 is about 275.2060252253.

The spelling of 20843652 in words is "twenty million, eight hundred forty-three thousand, six hundred fifty-two".