228155502 has 32 divisors (see below), whose sum is σ = 464630400. Its totient is φ = 74672928.

The previous prime is 228155497. The next prime is 228155507. The reversal of 228155502 is 205551822.

228155502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (228155497) and next prime (228155507).

It is a self number, because there is not a number n which added to its sum of digits gives 228155502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228155507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155649 + ... + 157107.

It is an arithmetic number, because the mean of its divisors is an integer number (14519700).

Almost surely, 2^228155502 is an apocalyptic number.

228155502 is an abundant number, since it is smaller than the sum of its proper divisors (236474898).

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

228155502 is a wasteful number, since it uses less digits than its factorization.

228155502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920.

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 228155502 is about 15104.8171786354. The cubic root of 228155502 is about 611.0503287670.

The spelling of 228155502 in words is "two hundred twenty-eight million, one hundred fifty-five thousand, five hundred two".