20248556 has 24 divisors (see below), whose sum is σ = 37373280. Its totient is φ = 9580032.

The previous prime is 20248541. The next prime is 20248559. The reversal of 20248556 is 65584202.

It is not an unprimeable number, because it can be changed into a prime (20248559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7790 + ... + 10058.

It is an arithmetic number, because the mean of its divisors is an integer number (1557220).

Almost surely, 2^20248556 is an apocalyptic number.

It is an amenable number.

20248556 is a deficient number, since it is larger than the sum of its proper divisors (17124724).

20248556 is a wasteful number, since it uses less digits than its factorization.

20248556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 20248556 is about 4499.8395526952. The cubic root of 20248556 is about 272.5616099507.

The spelling of 20248556 in words is "twenty million, two hundred forty-eight thousand, five hundred fifty-six".