20970352 has 40 divisors (see below), whose sum is σ = 44840880. Its totient is φ = 9438720.

The previous prime is 20970337. The next prime is 20970361. The reversal of 20970352 is 25307902.

It is a self number, because there is not a number n which added to its sum of digits gives 20970352.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7299 + ... + 9757.

It is an arithmetic number, because the mean of its divisors is an integer number (1121022).

Almost surely, 2^20970352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20970352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22420440).

20970352 is an abundant number, since it is smaller than the sum of its proper divisors (23870528).

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

20970352 is a wasteful number, since it uses less digits than its factorization.

20970352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2515 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 20970352 is about 4579.3396903921. The cubic root of 20970352 is about 275.7625206414.

The spelling of 20970352 in words is "twenty million, nine hundred seventy thousand, three hundred fifty-two".