252128942280 has 96 divisors (see below), whose sum is σ = 819648984960. Its totient is φ = 67215519360.

The previous prime is 252128942279. The next prime is 252128942287. The reversal of 252128942280 is 82249821252.

252128942280 is a `hidden beast` number, since 2 + 5 + 212 + 8 + 9 + 422 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (252128942287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1210719 + ... + 1403601.

It is an arithmetic number, because the mean of its divisors is an integer number (8538010260).

Almost surely, 2^252128942280 is an apocalyptic number.

252128942280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252128942280 is an abundant number, since it is smaller than the sum of its proper divisors (567520042680).

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

252128942280 is a wasteful number, since it uses less digits than its factorization.

252128942280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196531 (or 196524 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 252128942280 in words is "two hundred fifty-two billion, one hundred twenty-eight million, nine hundred forty-two thousand, two hundred eighty".