20754879 has 8 divisors (see below), whose sum is σ = 27740592. Its totient is φ = 13802880.

The previous prime is 20754869. The next prime is 20754883. The reversal of 20754879 is 97845702.

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

It is not a de Polignac number, because 20754879 - 2⁴ = 20754863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20754879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20754829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6954 + ... + 9479.

It is an arithmetic number, because the mean of its divisors is an integer number (3467574).

Almost surely, 2^20754879 is an apocalyptic number.

20754879 is a deficient number, since it is larger than the sum of its proper divisors (6985713).

20754879 is a wasteful number, since it uses less digits than its factorization.

20754879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16857.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 20754879 is about 4555.7522979196. The cubic root of 20754879 is about 274.8147689263.

The spelling of 20754879 in words is "twenty million, seven hundred fifty-four thousand, eight hundred seventy-nine".