64433028 has 96 divisors (see below), whose sum is σ = 180311040. Its totient is φ = 17677440.

The previous prime is 64433027. The next prime is 64433053. The reversal of 64433028 is 82033446.

It is a junction number, because it is equal to n+sod(n) for n = 64432986 and 64433004.

It is not an unprimeable number, because it can be changed into a prime (64433027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57126 + ... + 58242.

It is an arithmetic number, because the mean of its divisors is an integer number (1878240).

Almost surely, 2^64433028 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 64433028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90155520).

64433028 is an abundant number, since it is smaller than the sum of its proper divisors (115878012).

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

64433028 is a wasteful number, since it uses less digits than its factorization.

64433028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1175 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 64433028 is about 8027.0186246202. The cubic root of 64433028 is about 400.9001146315.

The spelling of 64433028 in words is "sixty-four million, four hundred thirty-three thousand, twenty-eight".