64236256 has 72 divisors (see below), whose sum is σ = 149443056. Its totient is φ = 27095040.

The previous prime is 64236253. The next prime is 64236301. The reversal of 64236256 is 65263246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64236253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111040 + ... + 111616.

It is an arithmetic number, because the mean of its divisors is an integer number (2075598).

Almost surely, 2^64236256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64236256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74721528).

64236256 is an abundant number, since it is smaller than the sum of its proper divisors (85206800).

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

64236256 is a wasteful number, since it uses less digits than its factorization.

64236256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 657 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 64236256 is about 8014.7523979222. The cubic root of 64236256 is about 400.4915955869.

The spelling of 64236256 in words is "sixty-four million, two hundred thirty-six thousand, two hundred fifty-six".