20715248 has 20 divisors (see below), whose sum is σ = 42497280. Its totient is φ = 9748224.

The previous prime is 20715241. The next prime is 20715271. The reversal of 20715248 is 84251702.

It is a self number, because there is not a number n which added to its sum of digits gives 20715248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20715241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37808 + ... + 38351.

It is an arithmetic number, because the mean of its divisors is an integer number (2124864).

Almost surely, 2^20715248 is an apocalyptic number.

It is an amenable number.

20715248 is an abundant number, since it is smaller than the sum of its proper divisors (21782032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20715248 is a wasteful number, since it uses less digits than its factorization.

20715248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76184 (or 76178 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 20715248 is about 4551.4006635321. The cubic root of 20715248 is about 274.6397398222.

The spelling of 20715248 in words is "twenty million, seven hundred fifteen thousand, two hundred forty-eight".