252381228 has 48 divisors (see below), whose sum is σ = 652036224. Its totient is φ = 75335040.

The previous prime is 252381203. The next prime is 252381247. The reversal of 252381228 is 822183252.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5425 + ... + 23112.

It is an arithmetic number, because the mean of its divisors is an integer number (13584088).

Almost surely, 2^252381228 is an apocalyptic number.

It is an amenable number.

252381228 is an abundant number, since it is smaller than the sum of its proper divisors (399654996).

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

252381228 is a wasteful number, since it uses less digits than its factorization.

252381228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28622 (or 28620 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 252381228 is about 15886.5108818771. The cubic root of 252381228 is about 631.9543142482.

The spelling of 252381228 in words is "two hundred fifty-two million, three hundred eighty-one thousand, two hundred twenty-eight".