20732475 has 24 divisors (see below), whose sum is σ = 34408512. Its totient is φ = 11015200.

The previous prime is 20732471. The next prime is 20732483. The reversal of 20732475 is 57423702.

It is not a de Polignac number, because 20732475 - 2² = 20732471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20732471) 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, 36544 + ... + 37106.

It is an arithmetic number, because the mean of its divisors is an integer number (1433688).

Almost surely, 2^20732475 is an apocalyptic number.

20732475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20732475 is a deficient number, since it is larger than the sum of its proper divisors (13676037).

20732475 is a wasteful number, since it uses less digits than its factorization.

20732475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 20732475 is about 4553.2927645826. The cubic root of 20732475 is about 274.7158497468.

The spelling of 20732475 in words is "twenty million, seven hundred thirty-two thousand, four hundred seventy-five".