20920292 has 24 divisors (see below), whose sum is σ = 39090240. Its totient is φ = 9767520.

The previous prime is 20920259. The next prime is 20920301. The reversal of 20920292 is 29202902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3458 + ... + 7334.

It is an arithmetic number, because the mean of its divisors is an integer number (1628760).

Almost surely, 2^20920292 is an apocalyptic number.

It is an amenable number.

20920292 is a deficient number, since it is larger than the sum of its proper divisors (18169948).

20920292 is a wasteful number, since it uses less digits than its factorization.

20920292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971 (or 3969 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20920292 is about 4573.8705709716. The cubic root of 20920292 is about 275.5429142320.

It can be divided in two parts, 20920 and 292, that added together give a palindrome (21212).

The spelling of 20920292 in words is "twenty million, nine hundred twenty thousand, two hundred ninety-two".