228042388 has 24 divisors (see below), whose sum is σ = 460275200. Its totient is φ = 96834528.

The previous prime is 228042383. The next prime is 228042407. The reversal of 228042388 is 883240822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228042383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34308 + ... + 40411.

Almost surely, 2^228042388 is an apocalyptic number.

228042388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

228042388 is an abundant number, since it is smaller than the sum of its proper divisors (232232812).

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

228042388 is a wasteful number, since it uses less digits than its factorization.

228042388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74839 (or 74837 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 37.

The square root of 228042388 is about 15101.0724122494. The cubic root of 228042388 is about 610.9493307316.

The spelling of 228042388 in words is "two hundred twenty-eight million, forty-two thousand, three hundred eighty-eight".