20056402 has 8 divisors (see below), whose sum is σ = 30211200. Its totient is φ = 9986004.

The previous prime is 20056363. The next prime is 20056403. The reversal of 20056402 is 20465002.

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

It is a super-2 number, since 2×20056402² = 804518522371208, 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 20056402.

It is not an unprimeable number, because it can be changed into a prime (20056403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20502 + ... + 21457.

It is an arithmetic number, because the mean of its divisors is an integer number (3776400).

Almost surely, 2^20056402 is an apocalyptic number.

20056402 is a deficient number, since it is larger than the sum of its proper divisors (10154798).

20056402 is a wasteful number, since it uses less digits than its factorization.

20056402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42200.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20056402 is about 4478.4374507187. The cubic root of 20056402 is about 271.6966864757.

The spelling of 20056402 in words is "twenty million, fifty-six thousand, four hundred two".