228651400 has 24 divisors (see below), whose sum is σ = 531614970. Its totient is φ = 91460480.

The previous prime is 228651361. The next prime is 228651419. The reversal of 228651400 is 4156822.

It can be written as a sum of positive squares in 3 ways, for example, as 132572196 + 96079204 = 11514^2 + 9802^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 571429 + ... + 571828.

Almost surely, 2^228651400 is an apocalyptic number.

228651400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228651400 is an abundant number, since it is smaller than the sum of its proper divisors (302963570).

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

228651400 is a wasteful number, since it uses less digits than its factorization.

228651400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143273 (or 1143264 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 228651400 is about 15121.2234954715. The cubic root of 228651400 is about 611.4927161740.

The spelling of 228651400 in words is "two hundred twenty-eight million, six hundred fifty-one thousand, four hundred".