20942492 has 12 divisors (see below), whose sum is σ = 36893136. Its totient is φ = 10401600.

The previous prime is 20942483. The next prime is 20942507. The reversal of 20942492 is 29424902.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16733 + ... + 17940.

It is an arithmetic number, because the mean of its divisors is an integer number (3074428).

Almost surely, 2^20942492 is an apocalyptic number.

It is an amenable number.

20942492 is a deficient number, since it is larger than the sum of its proper divisors (15950644).

20942492 is a wasteful number, since it uses less digits than its factorization.

20942492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34828 (or 34826 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 20942492 is about 4576.2967561119. The cubic root of 20942492 is about 275.6403457947.

The spelling of 20942492 in words is "twenty million, nine hundred forty-two thousand, four hundred ninety-two".