20743372 has 24 divisors (see below), whose sum is σ = 40006736. Its totient is φ = 9350208.

The previous prime is 20743369. The next prime is 20743391. The reversal of 20743372 is 27334702.

It is a self number, because there is not a number n which added to its sum of digits gives 20743372.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2403 + ... + 6874.

Almost surely, 2^20743372 is an apocalyptic number.

It is an amenable number.

20743372 is a deficient number, since it is larger than the sum of its proper divisors (19263364).

20743372 is a wasteful number, since it uses less digits than its factorization.

20743372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9337 (or 9335 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 20743372 is about 4554.4892139514. The cubic root of 20743372 is about 274.7639715830.

It can be divided in two parts, 20743 and 372, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20743372 in words is "twenty million, seven hundred forty-three thousand, three hundred seventy-two".