228142812 has 48 divisors (see below), whose sum is σ = 543850272. Its totient is φ = 74419200.

The previous prime is 228142753. The next prime is 228142829. The reversal of 228142812 is 218241822.

It is a self number, because there is not a number n which added to its sum of digits gives 228142812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119062 + ... + 120962.

It is an arithmetic number, because the mean of its divisors is an integer number (11330214).

Almost surely, 2^228142812 is an apocalyptic number.

It is an amenable number.

228142812 is an abundant number, since it is smaller than the sum of its proper divisors (315707460).

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

228142812 is a wasteful number, since it uses less digits than its factorization.

228142812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118 (or 2116 counting only the distinct ones).

The product of its digits is 4096, while the sum is 30.

The square root of 228142812 is about 15104.3971081272. The cubic root of 228142812 is about 611.0389996919.

The spelling of 228142812 in words is "two hundred twenty-eight million, one hundred forty-two thousand, eight hundred twelve".