20056470 has 32 divisors (see below), whose sum is σ = 55012608. Its totient is φ = 4584288.

The previous prime is 20056459. The next prime is 20056471. The reversal of 20056470 is 7465002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20056470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20056471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47544 + ... + 47963.

It is an arithmetic number, because the mean of its divisors is an integer number (1719144).

Almost surely, 2^20056470 is an apocalyptic number.

20056470 is an abundant number, since it is smaller than the sum of its proper divisors (34956138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20056470 is a wasteful number, since it uses less digits than its factorization.

20056470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95524.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20056470 is about 4478.4450426459. The cubic root of 20056470 is about 271.6969935323.

The spelling of 20056470 in words is "twenty million, fifty-six thousand, four hundred seventy".