228140478 has 24 divisors (see below), whose sum is σ = 498928248. Its totient is φ = 75335472.

The previous prime is 228140443. The next prime is 228140489. The reversal of 228140478 is 874041822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57301 + ... + 61152.

It is an arithmetic number, because the mean of its divisors is an integer number (20788677).

Almost surely, 2^228140478 is an apocalyptic number.

228140478 is an abundant number, since it is smaller than the sum of its proper divisors (270787770).

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

228140478 is a wasteful number, since it uses less digits than its factorization.

228140478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118568 (or 118565 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 228140478 is about 15104.3198456600. The cubic root of 228140478 is about 611.0369159534.

The spelling of 228140478 in words is "two hundred twenty-eight million, one hundred forty thousand, four hundred seventy-eight".