228137442 has 16 divisors (see below), whose sum is σ = 491373120. Its totient is φ = 70196112.

The previous prime is 228137431. The next prime is 228137443. The reversal of 228137442 is 244731822.

It is a happy number.

228137442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (228137443) 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, 1462342 + ... + 1462497.

It is an arithmetic number, because the mean of its divisors is an integer number (30710820).

Almost surely, 2^228137442 is an apocalyptic number.

228137442 is an abundant number, since it is smaller than the sum of its proper divisors (263235678).

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

228137442 is a wasteful number, since it uses less digits than its factorization.

228137442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924857.

The product of its digits is 21504, while the sum is 33.

The square root of 228137442 is about 15104.2193442760. The cubic root of 228137442 is about 611.0342054651.

The spelling of 228137442 in words is "two hundred twenty-eight million, one hundred thirty-seven thousand, four hundred forty-two".