20012970 has 32 divisors (see below), whose sum is σ = 48148992. Its totient is φ = 5323712.

The previous prime is 20012963. The next prime is 20012981. The reversal of 20012970 is 7921002.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22759 + ... + 23621.

It is an arithmetic number, because the mean of its divisors is an integer number (1504656).

Almost surely, 2^20012970 is an apocalyptic number.

20012970 is an abundant number, since it is smaller than the sum of its proper divisors (28136022).

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

20012970 is a wasteful number, since it uses less digits than its factorization.

20012970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 20012970 is about 4473.5858100633. The cubic root of 20012970 is about 271.5004256409.

Adding to 20012970 its reverse (7921002), we get a palindrome (27933972).

The spelling of 20012970 in words is "twenty million, twelve thousand, nine hundred seventy".