526640028 has 48 divisors (see below), whose sum is σ = 1272800256. Its totient is φ = 169303680.

The previous prime is 526640021. The next prime is 526640041. The reversal of 526640028 is 820046625.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (526640021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114175 + ... + 118697.

It is an arithmetic number, because the mean of its divisors is an integer number (26516672).

Almost surely, 2^526640028 is an apocalyptic number.

It is an amenable number.

526640028 is an abundant number, since it is smaller than the sum of its proper divisors (746160228).

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

526640028 is a wasteful number, since it uses less digits than its factorization.

526640028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874 (or 4872 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 526640028 is about 22948.6389138877. The cubic root of 526640028 is about 807.5534714597.

The spelling of 526640028 in words is "five hundred twenty-six million, six hundred forty thousand, twenty-eight".