20748408 has 32 divisors (see below), whose sum is σ = 52074960. Its totient is φ = 6888960.

The previous prime is 20748383. The next prime is 20748421. The reversal of 20748408 is 80484702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5088 + ... + 8208.

Almost surely, 2^20748408 is an apocalyptic number.

It is an amenable number.

20748408 is an abundant number, since it is smaller than the sum of its proper divisors (31326552).

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

20748408 is a wasteful number, since it uses less digits than its factorization.

20748408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407 (or 3403 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 20748408 is about 4555.0420415184. The cubic root of 20748408 is about 274.7862051812.

The spelling of 20748408 in words is "twenty million, seven hundred forty-eight thousand, four hundred eight".