228878415 has 24 divisors (see below), whose sum is σ = 398099520. Its totient is φ = 121644864.

The previous prime is 228878413. The next prime is 228878437. The reversal of 228878415 is 514878822.

It is a happy number.

228878415 is a `hidden beast` number, since 228 + 8 + 7 + 8 + 415 = 666.

228878415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228878415 - 2¹ = 228878413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228878413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4506 + ... + 21864.

It is an arithmetic number, because the mean of its divisors is an integer number (16587480).

Almost surely, 2^228878415 is an apocalyptic number.

228878415 is a deficient number, since it is larger than the sum of its proper divisors (169221105).

228878415 is a wasteful number, since it uses less digits than its factorization.

228878415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17663 (or 17660 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 228878415 is about 15128.7281355704. The cubic root of 228878415 is about 611.6950213757.

The spelling of 228878415 in words is "two hundred twenty-eight million, eight hundred seventy-eight thousand, four hundred fifteen".