228532992 has 144 divisors (see below), whose sum is σ = 651463680. Its totient is φ = 70963200.

The previous prime is 228532981. The next prime is 228533027. The reversal of 228532992 is 299235822.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690267 + ... + 690597.

Almost surely, 2^228532992 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 228532992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325731840).

228532992 is an abundant number, since it is smaller than the sum of its proper divisors (422930688).

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

228532992 is a wasteful number, since it uses less digits than its factorization.

228532992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 396 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 228532992 is about 15117.3076968090. The cubic root of 228532992 is about 611.3871433360.

The spelling of 228532992 in words is "two hundred twenty-eight million, five hundred thirty-two thousand, nine hundred ninety-two".