20813292 has 36 divisors (see below), whose sum is σ = 53735136. Its totient is φ = 6789600.

The previous prime is 20813291. The next prime is 20813293. The reversal of 20813292 is 29231802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20813291) and next prime (20813293).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (20813291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4459 + ... + 7842.

Almost surely, 2^20813292 is an apocalyptic number.

It is an amenable number.

20813292 is an abundant number, since it is smaller than the sum of its proper divisors (32921844).

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

20813292 is a wasteful number, since it uses less digits than its factorization.

20813292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12358 (or 12353 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20813292 is about 4562.1586995632. The cubic root of 20813292 is about 275.0723424002.

The spelling of 20813292 in words is "twenty million, eight hundred thirteen thousand, two hundred ninety-two".