228693870 has 24 divisors (see below), whose sum is σ = 594604296. Its totient is φ = 60985008.

The previous prime is 228693841. The next prime is 228693901. The reversal of 228693870 is 78396822.

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

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, 1270432 + ... + 1270611.

It is an arithmetic number, because the mean of its divisors is an integer number (24775179).

Almost surely, 2^228693870 is an apocalyptic number.

228693870 is an abundant number, since it is smaller than the sum of its proper divisors (365910426).

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

228693870 is a wasteful number, since it uses less digits than its factorization.

228693870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541056 (or 2541053 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 228693870 is about 15122.6277478486. The cubic root of 228693870 is about 611.5305736402.

The spelling of 228693870 in words is "two hundred twenty-eight million, six hundred ninety-three thousand, eight hundred seventy".