228155400 has 384 divisors, whose sum is σ = 899942400. Its totient is φ = 52588800.

The previous prime is 228155399. The next prime is 228155461. The reversal of 228155400 is 4551822.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1366117 + ... + 1366283.

It is an arithmetic number, because the mean of its divisors is an integer number (2343600).

Almost surely, 2^228155400 is an apocalyptic number.

228155400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228155400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449971200).

228155400 is an abundant number, since it is smaller than the sum of its proper divisors (671787000).

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

228155400 is a wasteful number, since it uses less digits than its factorization.

228155400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 228155400 is about 15104.8138022287. The cubic root of 228155400 is about 611.0502377076.

The spelling of 228155400 in words is "two hundred twenty-eight million, one hundred fifty-five thousand, four hundred".