64252428 has 12 divisors (see below), whose sum is σ = 149922360. Its totient is φ = 21417472.

The previous prime is 64252423. The next prime is 64252439. The reversal of 64252428 is 82425246.

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

It is not an unprimeable number, because it can be changed into a prime (64252423) 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, 2677173 + ... + 2677196.

It is an arithmetic number, because the mean of its divisors is an integer number (12493530).

Almost surely, 2^64252428 is an apocalyptic number.

It is an amenable number.

64252428 is an abundant number, since it is smaller than the sum of its proper divisors (85669932).

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

64252428 is a wasteful number, since it uses less digits than its factorization.

64252428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5354376 (or 5354374 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 64252428 is about 8015.7612239886. The cubic root of 64252428 is about 400.5252017726.

The spelling of 64252428 in words is "sixty-four million, two hundred fifty-two thousand, four hundred twenty-eight".