252278388 has 60 divisors (see below), whose sum is σ = 664806912. Its totient is φ = 83417040.

The previous prime is 252278381. The next prime is 252278399. The reversal of 252278388 is 883872252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252278381) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38083 + ... + 44213.

Almost surely, 2^252278388 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 252278388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332403456).

252278388 is an abundant number, since it is smaller than the sum of its proper divisors (412528524).

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

252278388 is a wasteful number, since it uses less digits than its factorization.

252278388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6274 (or 6263 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 252278388 is about 15883.2738438900. The cubic root of 252278388 is about 631.8684665915.

The spelling of 252278388 in words is "two hundred fifty-two million, two hundred seventy-eight thousand, three hundred eighty-eight".