20464368 has 60 divisors (see below), whose sum is σ = 55842408. Its totient is φ = 6456960.

The previous prime is 20464363. The next prime is 20464373. The reversal of 20464368 is 86346402.

It is an interprime number because it is at equal distance from previous prime (20464363) and next prime (20464373).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20464363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16738 + ... + 17918.

Almost surely, 2^20464368 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 20464368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27921204).

20464368 is an abundant number, since it is smaller than the sum of its proper divisors (35378040).

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

20464368 is a wasteful number, since it uses less digits than its factorization.

20464368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 20464368 is about 4523.7559615877. The cubic root of 20464368 is about 273.5265234792.

The spelling of 20464368 in words is "twenty million, four hundred sixty-four thousand, three hundred sixty-eight".