20468560 has 40 divisors (see below), whose sum is σ = 54389376. Its totient is φ = 7017600.

The previous prime is 20468557. The next prime is 20468593. The reversal of 20468560 is 6586402.

It is a tau number, because it is divible by the number of its divisors (40).

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, 17716 + ... + 18835.

Almost surely, 2^20468560 is an apocalyptic number.

20468560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20468560 is an abundant number, since it is smaller than the sum of its proper divisors (33920816).

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

20468560 is a wasteful number, since it uses less digits than its factorization.

20468560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36571 (or 36565 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 20468560 is about 4524.2192696641. The cubic root of 20468560 is about 273.5451989464.

The spelling of 20468560 in words is "twenty million, four hundred sixty-eight thousand, five hundred sixty".