20993248 has 12 divisors (see below), whose sum is σ = 41330520. Its totient is φ = 10496608.

The previous prime is 20993239. The next prime is 20993257. The reversal of 20993248 is 84239902.

It is an interprime number because it is at equal distance from previous prime (20993239) and next prime (20993257).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327988 + ... + 328051.

It is an arithmetic number, because the mean of its divisors is an integer number (3444210).

Almost surely, 2^20993248 is an apocalyptic number.

It is an amenable number.

20993248 is a deficient number, since it is larger than the sum of its proper divisors (20337272).

20993248 is an equidigital number, since it uses as much as digits as its factorization.

20993248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656049 (or 656041 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 20993248 is about 4581.8389321319. The cubic root of 20993248 is about 275.8628458082.

The spelling of 20993248 in words is "twenty million, nine hundred ninety-three thousand, two hundred forty-eight".