64231128 has 96 divisors (see below), whose sum is σ = 188937840. Its totient is φ = 19595520.

The previous prime is 64231103. The next prime is 64231129. The reversal of 64231128 is 82113246.

64231128 is a `hidden beast` number, since 642 + 3 + 1 + 12 + 8 = 666.

64231128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64231129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152358 + ... + 152778.

Almost surely, 2^64231128 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 64231128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94468920).

64231128 is an abundant number, since it is smaller than the sum of its proper divisors (124706712).

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

64231128 is a wasteful number, since it uses less digits than its factorization.

64231128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 602 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 64231128 is about 8014.4324814674. The cubic root of 64231128 is about 400.4809381811.

The spelling of 64231128 in words is "sixty-four million, two hundred thirty-one thousand, one hundred twenty-eight".