20901315 has 16 divisors (see below), whose sum is σ = 34596000. Its totient is φ = 10762752.

The previous prime is 20901301. The next prime is 20901329. The reversal of 20901315 is 51310902.

It is an interprime number because it is at equal distance from previous prime (20901301) and next prime (20901329).

It is not a de Polignac number, because 20901315 - 2⁴ = 20901299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20901291 and 20901300.

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, 23590 + ... + 24459.

It is an arithmetic number, because the mean of its divisors is an integer number (2162250).

Almost surely, 2^20901315 is an apocalyptic number.

20901315 is a deficient number, since it is larger than the sum of its proper divisors (13694685).

20901315 is a wasteful number, since it uses less digits than its factorization.

20901315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48086.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 20901315 is about 4571.7955991055. The cubic root of 20901315 is about 275.4595731428.

The spelling of 20901315 in words is "twenty million, nine hundred one thousand, three hundred fifteen".