20260992 has 64 divisors (see below), whose sum is σ = 56671200. Its totient is φ = 6395904.

The previous prime is 20260979. The next prime is 20260993. The reversal of 20260992 is 29906202.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (20260993) 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, 5908 + ... + 8684.

Almost surely, 2^20260992 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 20260992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28335600).

20260992 is an abundant number, since it is smaller than the sum of its proper divisors (36410208).

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

20260992 is a wasteful number, since it uses less digits than its factorization.

20260992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813 (or 2801 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 20260992 is about 4501.2211676388. The cubic root of 20260992 is about 272.6173980029.

The spelling of 20260992 in words is "twenty million, two hundred sixty thousand, nine hundred ninety-two".