20152115 has 16 divisors (see below), whose sum is σ = 24948000. Its totient is φ = 15617280.

The previous prime is 20152073. The next prime is 20152127. The reversal of 20152115 is 51125102.

It is not a de Polignac number, because 20152115 - 2⁶ = 20152051 is a prime.

It is a super-2 number, since 2×20152115² = 812215477946450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20152093 and 20152102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40136 + ... + 40634.

It is an arithmetic number, because the mean of its divisors is an integer number (1559250).

Almost surely, 2^20152115 is an apocalyptic number.

20152115 is a deficient number, since it is larger than the sum of its proper divisors (4795885).

20152115 is a wasteful number, since it uses less digits than its factorization.

20152115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 20152115 is about 4489.1107137160. The cubic root of 20152115 is about 272.1281970307.

Adding to 20152115 its reverse (51125102), we get a palindrome (71277217).

The spelling of 20152115 in words is "twenty million, one hundred fifty-two thousand, one hundred fifteen".