64293972 has 12 divisors (see below), whose sum is σ = 150019296. Its totient is φ = 21431320.

The previous prime is 64293961. The next prime is 64293973. The reversal of 64293972 is 27939246.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64293973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2678904 + ... + 2678927.

It is an arithmetic number, because the mean of its divisors is an integer number (12501608).

Almost surely, 2^64293972 is an apocalyptic number.

It is an amenable number.

64293972 is an abundant number, since it is smaller than the sum of its proper divisors (85725324).

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

64293972 is a wasteful number, since it uses less digits than its factorization.

64293972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5357838 (or 5357836 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 64293972 is about 8018.3521997977. The cubic root of 64293972 is about 400.6115063403.

It can be divided in two parts, 6429 and 3972, that added together give a palindrome (10401).

The spelling of 64293972 in words is "sixty-four million, two hundred ninety-three thousand, nine hundred seventy-two".