20460651 has 24 divisors (see below), whose sum is σ = 28979712. Its totient is φ = 12834000.

The previous prime is 20460637. The next prime is 20460653. The reversal of 20460651 is 15606402.

It is not a de Polignac number, because 20460651 - 2⁵ = 20460619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20460653) 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, 135426 + ... + 135576.

It is an arithmetic number, because the mean of its divisors is an integer number (1207488).

Almost surely, 2^20460651 is an apocalyptic number.

20460651 is a deficient number, since it is larger than the sum of its proper divisors (8519061).

20460651 is a wasteful number, since it uses less digits than its factorization.

20460651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20460651 is about 4523.3451117508. The cubic root of 20460651 is about 273.5099620157.

The spelling of 20460651 in words is "twenty million, four hundred sixty thousand, six hundred fifty-one".