20072964 has 12 divisors (see below), whose sum is σ = 46836944. Its totient is φ = 6690984.

The previous prime is 20072957. The next prime is 20072989. The reversal of 20072964 is 46927002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 836362 + ... + 836385.

Almost surely, 2^20072964 is an apocalyptic number.

It is an amenable number.

20072964 is an abundant number, since it is smaller than the sum of its proper divisors (26763980).

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

20072964 is a wasteful number, since it uses less digits than its factorization.

20072964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672754 (or 1672752 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 20072964 is about 4480.2861515756. The cubic root of 20072964 is about 271.7714523364.

Adding to 20072964 its reverse (46927002), we get a palindrome (66999966).

The spelling of 20072964 in words is "twenty million, seventy-two thousand, nine hundred sixty-four".