20306468 has 24 divisors (see below), whose sum is σ = 43737792. Its totient is φ = 8033184.

The previous prime is 20306453. The next prime is 20306471. The reversal of 20306468 is 86460302.

It is a self number, because there is not a number n which added to its sum of digits gives 20306468.

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, 27530 + ... + 28257.

It is an arithmetic number, because the mean of its divisors is an integer number (1822408).

Almost surely, 2^20306468 is an apocalyptic number.

20306468 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20306468 is an abundant number, since it is smaller than the sum of its proper divisors (23431324).

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

20306468 is a wasteful number, since it uses less digits than its factorization.

20306468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55811 (or 55809 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 20306468 is about 4506.2698543252. The cubic root of 20306468 is about 272.8212097555.

The spelling of 20306468 in words is "twenty million, three hundred six thousand, four hundred sixty-eight".