20470670 has 16 divisors (see below), whose sum is σ = 40197168. Its totient is φ = 7443840.

The previous prime is 20470651. The next prime is 20470679. The reversal of 20470670 is 7607402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92939 + ... + 93158.

It is an arithmetic number, because the mean of its divisors is an integer number (2512323).

Almost surely, 2^20470670 is an apocalyptic number.

20470670 is a deficient number, since it is larger than the sum of its proper divisors (19726498).

20470670 is a wasteful number, since it uses less digits than its factorization.

20470670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186115.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 20470670 is about 4524.4524530599. The cubic root of 20470670 is about 273.5545980857.

The spelling of 20470670 in words is "twenty million, four hundred seventy thousand, six hundred seventy".