20715152 has 20 divisors (see below), whose sum is σ = 40293180. Its totient is φ = 10316928.

The previous prime is 20715113. The next prime is 20715169. The reversal of 20715152 is 25151702.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7639696 + 13075456 = 2764^2 + 3616^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1898 + ... + 6710.

It is an arithmetic number, because the mean of its divisors is an integer number (2014659).

Almost surely, 2^20715152 is an apocalyptic number.

It is an amenable number.

20715152 is a deficient number, since it is larger than the sum of its proper divisors (19578028).

20715152 is a wasteful number, since it uses less digits than its factorization.

20715152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090 (or 5084 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 20715152 is about 4551.3901173158. The cubic root of 20715152 is about 274.6393155702.

Adding to 20715152 its reverse (25151702), we get a palindrome (45866854).

The spelling of 20715152 in words is "twenty million, seven hundred fifteen thousand, one hundred fifty-two".