20479355 has 8 divisors (see below), whose sum is σ = 26465712. Its totient is φ = 15123168.

The previous prime is 20479343. The next prime is 20479363. The reversal of 20479355 is 55397402.

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 20479355 - 2²² = 16285051 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157469 + ... + 157598.

It is an arithmetic number, because the mean of its divisors is an integer number (3308214).

Almost surely, 2^20479355 is an apocalyptic number.

20479355 is a deficient number, since it is larger than the sum of its proper divisors (5986357).

20479355 is a wasteful number, since it uses less digits than its factorization.

20479355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315085.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 20479355 is about 4525.4121359275. The cubic root of 20479355 is about 273.5932792129.

The spelling of 20479355 in words is "twenty million, four hundred seventy-nine thousand, three hundred fifty-five".