20624248 has 8 divisors (see below), whose sum is σ = 38670480. Its totient is φ = 10312120.

The previous prime is 20624239. The next prime is 20624251. The reversal of 20624248 is 84242602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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, 1289008 + ... + 1289023.

It is an arithmetic number, because the mean of its divisors is an integer number (4833810).

Almost surely, 2^20624248 is an apocalyptic number.

It is an amenable number.

20624248 is a deficient number, since it is larger than the sum of its proper divisors (18046232).

20624248 is a wasteful number, since it uses less digits than its factorization.

20624248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578037 (or 2578033 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 20624248 is about 4541.3927379164. The cubic root of 20624248 is about 274.2369945916.

The spelling of 20624248 in words is "twenty million, six hundred twenty-four thousand, two hundred forty-eight".