20732315 has 8 divisors (see below), whose sum is σ = 25960608. Its totient is φ = 15864640.

The previous prime is 20732293. The next prime is 20732323. The reversal of 20732315 is 51323702.

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

It is not a de Polignac number, because 20732315 - 2¹⁸ = 20470171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 90026 + ... + 90255.

It is an arithmetic number, because the mean of its divisors is an integer number (3245076).

Almost surely, 2^20732315 is an apocalyptic number.

20732315 is a deficient number, since it is larger than the sum of its proper divisors (5228293).

20732315 is a wasteful number, since it uses less digits than its factorization.

20732315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180309.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 20732315 is about 4553.2751948460. The cubic root of 20732315 is about 274.7151430512.

The spelling of 20732315 in words is "twenty million, seven hundred thirty-two thousand, three hundred fifteen".