228402288 has 40 divisors (see below), whose sum is σ = 655600400. Its totient is φ = 76133952.

The previous prime is 228402277. The next prime is 228402301. The reversal of 228402288 is 882204822.

228402288 is a `hidden beast` number, since 228 + 402 + 28 + 8 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263923 + ... + 264786.

It is an arithmetic number, because the mean of its divisors is an integer number (16390010).

Almost surely, 2^228402288 is an apocalyptic number.

It is an amenable number.

228402288 is an abundant number, since it is smaller than the sum of its proper divisors (427198112).

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

228402288 is a wasteful number, since it uses less digits than its factorization.

228402288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528726 (or 528714 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The square root of 228402288 is about 15112.9840865396. The cubic root of 228402288 is about 611.2705650050.

The spelling of 228402288 in words is "two hundred twenty-eight million, four hundred two thousand, two hundred eighty-eight".