20970342 has 48 divisors (see below), whose sum is σ = 48728160. Its totient is φ = 6505488.

The previous prime is 20970337. The next prime is 20970361. The reversal of 20970342 is 24307902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 566748 + ... + 566784.

It is an arithmetic number, because the mean of its divisors is an integer number (1015170).

Almost surely, 2^20970342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20970342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24364080).

20970342 is an abundant number, since it is smaller than the sum of its proper divisors (27757818).

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

20970342 is an equidigital number, since it uses as much as digits as its factorization.

20970342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20970342 is about 4579.3385985315. The cubic root of 20970342 is about 275.7624768077.

It can be divided in two parts, 20970 and 342, that added together give a palindrome (21312).

The spelling of 20970342 in words is "twenty million, nine hundred seventy thousand, three hundred forty-two".