20232865 has 8 divisors (see below), whose sum is σ = 25116840. Its totient is φ = 15628032.

The previous prime is 20232841. The next prime is 20232871. The reversal of 20232865 is 56823202.

It can be written as a sum of positive squares in 4 ways, for example, as 4096576 + 16136289 = 2024^2 + 4017^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20232865 - 2⁹ = 20232353 is a prime.

It is a super-2 number, since 2×20232865² = 818737652216450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69624 + ... + 69913.

It is an arithmetic number, because the mean of its divisors is an integer number (3139605).

Almost surely, 2^20232865 is an apocalyptic number.

It is an amenable number.

20232865 is a deficient number, since it is larger than the sum of its proper divisors (4883975).

20232865 is a wasteful number, since it uses less digits than its factorization.

20232865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139571.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20232865 is about 4498.0957081859. The cubic root of 20232865 is about 272.4911873255.

The spelling of 20232865 in words is "twenty million, two hundred thirty-two thousand, eight hundred sixty-five".