64280044 has 12 divisors (see below), whose sum is σ = 112987224. Its totient is φ = 31997984.

The previous prime is 64280023. The next prime is 64280089. The reversal of 64280044 is 44008246.

It is a junction number, because it is equal to n+sod(n) for n = 64279994 and 64280021.

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, 34489 + ... + 36304.

It is an arithmetic number, because the mean of its divisors is an integer number (9415602).

Almost surely, 2^64280044 is an apocalyptic number.

It is an amenable number.

64280044 is a deficient number, since it is larger than the sum of its proper divisors (48707180).

64280044 is a wasteful number, since it uses less digits than its factorization.

64280044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71024 (or 71022 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 64280044 is about 8017.4836451346. The cubic root of 64280044 is about 400.5825761008.

The spelling of 64280044 in words is "sixty-four million, two hundred eighty thousand, forty-four".