20703470 has 16 divisors (see below), whose sum is σ = 37322208. Its totient is φ = 8268960.

The previous prime is 20703439. The next prime is 20703479. The reversal of 20703470 is 7430702.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20703479) 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, 8600 + ... + 10740.

It is an arithmetic number, because the mean of its divisors is an integer number (2332638).

Almost surely, 2^20703470 is an apocalyptic number.

20703470 is a deficient number, since it is larger than the sum of its proper divisors (16618738).

20703470 is a wasteful number, since it uses less digits than its factorization.

20703470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 20703470 is about 4550.1065921580. The cubic root of 20703470 is about 274.5876796184.

The spelling of 20703470 in words is "twenty million, seven hundred three thousand, four hundred seventy".