64427972 has 12 divisors (see below), whose sum is σ = 128856000. Its totient is φ = 27611976.

The previous prime is 64427971. The next prime is 64427983. The reversal of 64427972 is 27972446.

64427972 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (64427971) 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, 1150472 + ... + 1150527.

It is an arithmetic number, because the mean of its divisors is an integer number (10738000).

Almost surely, 2^64427972 is an apocalyptic number.

It is an amenable number.

64427972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64427972 is a wasteful number, since it uses less digits than its factorization.

64427972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301010 (or 2301008 counting only the distinct ones).

The product of its digits is 169344, while the sum is 41.

The square root of 64427972 is about 8026.7036820852. The cubic root of 64427972 is about 400.8896282703.

The spelling of 64427972 in words is "sixty-four million, four hundred twenty-seven thousand, nine hundred seventy-two".