20800748 has 12 divisors (see below), whose sum is σ = 36762432. Its totient is φ = 10297200.

The previous prime is 20800739. The next prime is 20800807. The reversal of 20800748 is 84700802.

It is a super-2 number, since 2×20800748² = 865342234719008, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20800748.

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, 25340 + ... + 26147.

It is an arithmetic number, because the mean of its divisors is an integer number (3063536).

Almost surely, 2^20800748 is an apocalyptic number.

It is an amenable number.

20800748 is a deficient number, since it is larger than the sum of its proper divisors (15961684).

20800748 is a wasteful number, since it uses less digits than its factorization.

20800748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51592 (or 51590 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 20800748 is about 4560.7837045841. The cubic root of 20800748 is about 275.0170700148.

The spelling of 20800748 in words is "twenty million, eight hundred thousand, seven hundred forty-eight".