20923444 has 12 divisors (see below), whose sum is σ = 36652000. Its totient is φ = 10451448.

The previous prime is 20923429. The next prime is 20923459. The reversal of 20923444 is 44432902.

It is an interprime number because it is at equal distance from previous prime (20923429) and next prime (20923459).

It is a super-2 number, since 2×20923444² = 875581017642272, which contains 22 as substring.

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, 3727 + ... + 7465.

Almost surely, 2^20923444 is an apocalyptic number.

It is an amenable number.

20923444 is a deficient number, since it is larger than the sum of its proper divisors (15728556).

20923444 is a wasteful number, since it uses less digits than its factorization.

20923444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142 (or 5140 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20923444 is about 4574.2151239311. The cubic root of 20923444 is about 275.5567519555.

It can be divided in two parts, 209 and 23444, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 20923444 in words is "twenty million, nine hundred twenty-three thousand, four hundred forty-four".