20468812 has 48 divisors (see below), whose sum is σ = 44960832. Its totient is φ = 7937280.

The previous prime is 20468801. The next prime is 20468831. The reversal of 20468812 is 21886402.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18762 + ... + 19822.

It is an arithmetic number, because the mean of its divisors is an integer number (936684).

Almost surely, 2^20468812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20468812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22480416).

20468812 is an abundant number, since it is smaller than the sum of its proper divisors (24492020).

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

20468812 is a wasteful number, since it uses less digits than its factorization.

20468812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 20468812 is about 4524.2471196874. The cubic root of 20468812 is about 273.5463215316.

The spelling of 20468812 in words is "twenty million, four hundred sixty-eight thousand, eight hundred twelve".