20768372 has 12 divisors (see below), whose sum is σ = 36382500. Its totient is φ = 10373376.

The previous prime is 20768369. The next prime is 20768393. The reversal of 20768372 is 27386702.

It can be written as a sum of positive squares in 2 ways, for example, as 8976016 + 11792356 = 2996^2 + 3434^2 .

It is a hoax number, since the sum of its digits (35) 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, 2918 + ... + 7074.

It is an arithmetic number, because the mean of its divisors is an integer number (3031875).

Almost surely, 2^20768372 is an apocalyptic number.

It is an amenable number.

20768372 is a deficient number, since it is larger than the sum of its proper divisors (15614128).

20768372 is a wasteful number, since it uses less digits than its factorization.

20768372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410 (or 5408 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 20768372 is about 4557.2329323834. The cubic root of 20768372 is about 274.8743095033.

The spelling of 20768372 in words is "twenty million, seven hundred sixty-eight thousand, three hundred seventy-two".