20624879 has 8 divisors (see below), whose sum is σ = 22639872. Its totient is φ = 18633240.

The previous prime is 20624843. The next prime is 20624881. The reversal of 20624879 is 97842602.

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

It is a cyclic number.

It is not a de Polignac number, because 20624879 - 2⁸ = 20624623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20624809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3959 + ... + 7544.

It is an arithmetic number, because the mean of its divisors is an integer number (2829984).

Almost surely, 2^20624879 is an apocalyptic number.

20624879 is a deficient number, since it is larger than the sum of its proper divisors (2014993).

20624879 is a wasteful number, since it uses less digits than its factorization.

20624879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11677.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 20624879 is about 4541.4622094651. The cubic root of 20624879 is about 274.2397913284.

The spelling of 20624879 in words is "twenty million, six hundred twenty-four thousand, eight hundred seventy-nine".