20383264 has 48 divisors (see below), whose sum is σ = 44392320. Its totient is φ = 9135360.

The previous prime is 20383249. The next prime is 20383277. The reversal of 20383264 is 46238302.

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, 27442 + ... + 28174.

It is an arithmetic number, because the mean of its divisors is an integer number (924840).

Almost surely, 2^20383264 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 20383264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22196160).

20383264 is an abundant number, since it is smaller than the sum of its proper divisors (24009056).

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

20383264 is a wasteful number, since it uses less digits than its factorization.

20383264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20383264 is about 4514.7828297715. The cubic root of 20383264 is about 273.1647000016.

The spelling of 20383264 in words is "twenty million, three hundred eighty-three thousand, two hundred sixty-four".