228507392 has 54 divisors (see below), whose sum is σ = 478381848. Its totient is φ = 108731392.

The previous prime is 228507379. The next prime is 228507427. The reversal of 228507392 is 293705822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1159838 + ... + 1160034.

Almost surely, 2^228507392 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 228507392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239190924).

228507392 is an abundant number, since it is smaller than the sum of its proper divisors (249874456).

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

228507392 is an frugal number, since it uses more digits than its factorization.

228507392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 228507392 is about 15116.4609614817. The cubic root of 228507392 is about 611.3643135246.

The spelling of 228507392 in words is "two hundred twenty-eight million, five hundred seven thousand, three hundred ninety-two".