228725142 has 16 divisors (see below), whose sum is σ = 468608112. Its totient is φ = 74382080.

The previous prime is 228725129. The next prime is 228725143. The reversal of 228725142 is 241527822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228725143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464643 + ... + 465134.

It is an arithmetic number, because the mean of its divisors is an integer number (29288007).

Almost surely, 2^228725142 is an apocalyptic number.

228725142 is an abundant number, since it is smaller than the sum of its proper divisors (239882970).

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

228725142 is a wasteful number, since it uses less digits than its factorization.

228725142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929823.

The product of its digits is 17920, while the sum is 33.

The square root of 228725142 is about 15123.6616597965. The cubic root of 228725142 is about 611.5584462900.

The spelling of 228725142 in words is "two hundred twenty-eight million, seven hundred twenty-five thousand, one hundred forty-two".