20807848 has 16 divisors (see below), whose sum is σ = 40360500. Its totient is φ = 10045056.

The previous prime is 20807837. The next prime is 20807861. The reversal of 20807848 is 84870802.

It can be written as a sum of positive squares in 2 ways, for example, as 20629764 + 178084 = 4542^2 + 422^2 .

It is a super-2 number, since 2×20807848² = 865933076782208, which contains 22 as substring.

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, 44613 + ... + 45076.

Almost surely, 2^20807848 is an apocalyptic number.

It is an amenable number.

20807848 is a deficient number, since it is larger than the sum of its proper divisors (19552652).

20807848 is a wasteful number, since it uses less digits than its factorization.

20807848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89724 (or 89720 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 20807848 is about 4561.5620131705. The cubic root of 20807848 is about 275.0483573363.

The spelling of 20807848 in words is "twenty million, eight hundred seven thousand, eight hundred forty-eight".