20396264 has 48 divisors (see below), whose sum is σ = 45280800. Its totient is φ = 8436960.

The previous prime is 20396237. The next prime is 20396269. The reversal of 20396264 is 46269302.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20396264.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20396269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53627 + ... + 54005.

It is an arithmetic number, because the mean of its divisors is an integer number (943350).

Almost surely, 2^20396264 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 20396264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22640400).

20396264 is an abundant number, since it is smaller than the sum of its proper divisors (24884536).

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

20396264 is a wasteful number, since it uses less digits than its factorization.

20396264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 20396264 is about 4516.2223151656. Note that the first 3 decimals coincide. The cubic root of 20396264 is about 273.2227604840. Note that the first 3 decimals are identical.

The spelling of 20396264 in words is "twenty million, three hundred ninety-six thousand, two hundred sixty-four".