20653460 has 24 divisors (see below), whose sum is σ = 43708896. Its totient is φ = 8197280.

The previous prime is 20653447. The next prime is 20653469. The reversal of 20653460 is 6435602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20653469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1322 + ... + 6561.

It is an arithmetic number, because the mean of its divisors is an integer number (1821204).

Almost surely, 2^20653460 is an apocalyptic number.

20653460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20653460 is an abundant number, since it is smaller than the sum of its proper divisors (23055436).

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

20653460 is a wasteful number, since it uses less digits than its factorization.

20653460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8023 (or 8021 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20653460 is about 4544.6077938586. The cubic root of 20653460 is about 274.3664091173.

The spelling of 20653460 in words is "twenty million, six hundred fifty-three thousand, four hundred sixty".