20315364 has 12 divisors (see below), whose sum is σ = 47402544. Its totient is φ = 6771784.

The previous prime is 20315359. The next prime is 20315369. The reversal of 20315364 is 46351302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20315359) and next prime (20315369).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20315369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846462 + ... + 846485.

It is an arithmetic number, because the mean of its divisors is an integer number (3950212).

Almost surely, 2^20315364 is an apocalyptic number.

It is an amenable number.

20315364 is an abundant number, since it is smaller than the sum of its proper divisors (27087180).

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

20315364 is a wasteful number, since it uses less digits than its factorization.

20315364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692954 (or 1692952 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20315364 is about 4507.2568154034. The cubic root of 20315364 is about 272.8610437492.

Adding to 20315364 its reverse (46351302), we get a palindrome (66666666).

The spelling of 20315364 in words is "twenty million, three hundred fifteen thousand, three hundred sixty-four".