20992344 has 16 divisors (see below), whose sum is σ = 52480920. Its totient is φ = 6997440.

The previous prime is 20992343. The next prime is 20992379. The reversal of 20992344 is 44329902.

It is a super-2 number, since 2×20992344² = 881357013228672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20992343) 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, 437317 + ... + 437364.

Almost surely, 2^20992344 is an apocalyptic number.

20992344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20992344 is an abundant number, since it is smaller than the sum of its proper divisors (31488576).

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

20992344 is a wasteful number, since it uses less digits than its factorization.

20992344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874690 (or 874686 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 20992344 is about 4581.7402807230. The cubic root of 20992344 is about 275.8588860653.

The spelling of 20992344 in words is "twenty million, nine hundred ninety-two thousand, three hundred forty-four".