20652079 has 6 divisors (see below), whose sum is σ = 24023904. Its totient is φ = 17701740.

The previous prime is 20652077. The next prime is 20652103. The reversal of 20652079 is 97025602.

It is not a de Polignac number, because 20652079 - 2¹ = 20652077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20652079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20652077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210687 + ... + 210784.

It is an arithmetic number, because the mean of its divisors is an integer number (4003984).

Almost surely, 2^20652079 is an apocalyptic number.

20652079 is a deficient number, since it is larger than the sum of its proper divisors (3371825).

20652079 is an equidigital number, since it uses as much as digits as its factorization.

20652079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421485 (or 421478 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 20652079 is about 4544.4558530147. The cubic root of 20652079 is about 274.3602937827.

The spelling of 20652079 in words is "twenty million, six hundred fifty-two thousand, seventy-nine".