228525730 has 64 divisors (see below), whose sum is σ = 462672000. Its totient is φ = 80759808.

The previous prime is 228525721. The next prime is 228525733. The reversal of 228525730 is 37525822.

228525730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (228525733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 448716 + ... + 449224.

It is an arithmetic number, because the mean of its divisors is an integer number (7229250).

Almost surely, 2^228525730 is an apocalyptic number.

228525730 is an abundant number, since it is smaller than the sum of its proper divisors (234146270).

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

228525730 is a wasteful number, since it uses less digits than its factorization.

228525730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 228525730 is about 15117.0675066297. The cubic root of 228525730 is about 611.3806673338.

It can be divided in two parts, 22852 and 5730, that added together give a palindrome (28582).

The spelling of 228525730 in words is "two hundred twenty-eight million, five hundred twenty-five thousand, seven hundred thirty".