20702670 has 16 divisors (see below), whose sum is σ = 49686480. Its totient is φ = 5520704.

The previous prime is 20702659. The next prime is 20702683. The reversal of 20702670 is 7620702.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20702670.

It is a congruent number.

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, 345015 + ... + 345074.

It is an arithmetic number, because the mean of its divisors is an integer number (3105405).

Almost surely, 2^20702670 is an apocalyptic number.

20702670 is an abundant number, since it is smaller than the sum of its proper divisors (28983810).

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

20702670 is a wasteful number, since it uses less digits than its factorization.

20702670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690099.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 20702670 is about 4550.0186812803. The cubic root of 20702670 is about 274.5841428043.

The spelling of 20702670 in words is "twenty million, seven hundred two thousand, six hundred seventy".