20232515 has 8 divisors (see below), whose sum is σ = 24621408. Its totient is φ = 15957760.

The previous prime is 20232493. The next prime is 20232521. The reversal of 20232515 is 51523202.

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

It is a de Polignac number, because none of the positive numbers 2^k-20232515 is a prime.

It is a Duffinian number.

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, 28142 + ... + 28851.

It is an arithmetic number, because the mean of its divisors is an integer number (3077676).

Almost surely, 2^20232515 is an apocalyptic number.

20232515 is a deficient number, since it is larger than the sum of its proper divisors (4388893).

20232515 is an equidigital number, since it uses as much as digits as its factorization.

20232515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57069.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 20232515 is about 4498.0568026649. The cubic root of 20232515 is about 272.4896160788.

Adding to 20232515 its reverse (51523202), we get a palindrome (71755717).

The spelling of 20232515 in words is "twenty million, two hundred thirty-two thousand, five hundred fifteen".