20752115 has 16 divisors (see below), whose sum is σ = 25505280. Its totient is φ = 16205280.

The previous prime is 20752091. The next prime is 20752133. The reversal of 20752115 is 51125702.

It is a happy number.

It is not a de Polignac number, because 20752115 - 2¹⁴ = 20735731 is a prime.

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, 42020 + ... + 42510.

It is an arithmetic number, because the mean of its divisors is an integer number (1594080).

Almost surely, 2^20752115 is an apocalyptic number.

20752115 is a deficient number, since it is larger than the sum of its proper divisors (4753165).

20752115 is a wasteful number, since it uses less digits than its factorization.

20752115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682.

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

The square root of 20752115 is about 4555.4489350667. The cubic root of 20752115 is about 274.8025690360.

Adding to 20752115 its reverse (51125702), we get a palindrome (71877817).

The spelling of 20752115 in words is "twenty million, seven hundred fifty-two thousand, one hundred fifteen".