20795715 has 24 divisors (see below), whose sum is σ = 36155808. Its totient is φ = 11057280.

The previous prime is 20795707. The next prime is 20795717. The reversal of 20795715 is 51759702.

It is not a de Polignac number, because 20795715 - 2³ = 20795707 is a prime.

It is a super-2 number, since 2×20795715² = 864923524722450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20795715.

It is not an unprimeable number, because it can be changed into a prime (20795717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23002 + ... + 23888.

It is an arithmetic number, because the mean of its divisors is an integer number (1506492).

Almost surely, 2^20795715 is an apocalyptic number.

20795715 is a deficient number, since it is larger than the sum of its proper divisors (15360093).

20795715 is a wasteful number, since it uses less digits than its factorization.

20795715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419 (or 1416 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

The square root of 20795715 is about 4560.2319019980. The cubic root of 20795715 is about 274.9948869573.

The spelling of 20795715 in words is "twenty million, seven hundred ninety-five thousand, seven hundred fifteen".