228687378 has 16 divisors (see below), whose sum is σ = 457650336. Its totient is φ = 76183200.

The previous prime is 228687377. The next prime is 228687409. The reversal of 228687378 is 873786822.

228687378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 228687378.

It is not an unprimeable number, because it can be changed into a prime (228687377) 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, 225 + ... + 21387.

It is an arithmetic number, because the mean of its divisors is an integer number (28603146).

Almost surely, 2^228687378 is an apocalyptic number.

228687378 is an abundant number, since it is smaller than the sum of its proper divisors (228962958).

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

228687378 is a wasteful number, since it uses less digits than its factorization.

228687378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22969.

The product of its digits is 1806336, while the sum is 51.

The square root of 228687378 is about 15122.4131010894. The cubic root of 228687378 is about 611.5247870195.

The spelling of 228687378 in words is "two hundred twenty-eight million, six hundred eighty-seven thousand, three hundred seventy-eight".