20748675 has 24 divisors (see below), whose sum is σ = 35236336. Its totient is φ = 10765440.

The previous prime is 20748617. The next prime is 20748677. The reversal of 20748675 is 57684702.

It is not a de Polignac number, because 20748675 - 2⁷ = 20748547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20748677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 964 + ... + 6513.

Almost surely, 2^20748675 is an apocalyptic number.

20748675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20748675 is a deficient number, since it is larger than the sum of its proper divisors (14487661).

20748675 is a wasteful number, since it uses less digits than its factorization.

20748675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7527 (or 7522 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 20748675 is about 4555.0713496058. The cubic root of 20748675 is about 274.7873838677.

The spelling of 20748675 in words is "twenty million, seven hundred forty-eight thousand, six hundred seventy-five".