20813248 has 28 divisors (see below), whose sum is σ = 41473120. Its totient is φ = 10363392.

The previous prime is 20813237. The next prime is 20813257. The reversal of 20813248 is 84231802.

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, 19513 + ... + 20551.

Almost surely, 2^20813248 is an apocalyptic number.

It is an amenable number.

20813248 is a deficient number, since it is larger than the sum of its proper divisors (20659872).

20813248 is a wasteful number, since it uses less digits than its factorization.

20813248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364 (or 1354 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 20813248 is about 4562.1538772821. The cubic root of 20813248 is about 275.0721485627.

It can be divided in two parts, 2081 and 3248, that added together give a square (5329 = 73²).

The spelling of 20813248 in words is "twenty million, eight hundred thirteen thousand, two hundred forty-eight".