228783072 has 48 divisors (see below), whose sum is σ = 686351232. Its totient is φ = 65366400.

The previous prime is 228783067. The next prime is 228783089. The reversal of 228783072 is 270387822.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 228783072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169554 + ... + 170897.

It is an arithmetic number, because the mean of its divisors is an integer number (14298984).

Almost surely, 2^228783072 is an apocalyptic number.

It is an amenable number.

228783072 is an abundant number, since it is smaller than the sum of its proper divisors (457568160).

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

228783072 is a wasteful number, since it uses less digits than its factorization.

228783072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340471 (or 340463 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 228783072 is about 15125.5767493342. The cubic root of 228783072 is about 611.6100724324.

The spelling of 228783072 in words is "two hundred twenty-eight million, seven hundred eighty-three thousand, seventy-two".