20159315 has 16 divisors (see below), whose sum is σ = 26757216. Its totient is φ = 14457600.

The previous prime is 20159311. The next prime is 20159317. The reversal of 20159315 is 51395102.

It is not a de Polignac number, because 20159315 - 2² = 20159311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20159311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1505 + ... + 6525.

It is an arithmetic number, because the mean of its divisors is an integer number (1672326).

Almost surely, 2^20159315 is an apocalyptic number.

20159315 is a deficient number, since it is larger than the sum of its proper divisors (6597901).

20159315 is a wasteful number, since it uses less digits than its factorization.

20159315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 20159315 is about 4489.9125826680. The cubic root of 20159315 is about 272.1606020615.

The spelling of 20159315 in words is "twenty million, one hundred fifty-nine thousand, three hundred fifteen".