228142772 has 48 divisors (see below), whose sum is σ = 476129472. Its totient is φ = 94279680.

The previous prime is 228142753. The next prime is 228142829. The reversal of 228142772 is 277241822.

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, 35348 + ... + 41300.

It is an arithmetic number, because the mean of its divisors is an integer number (9919364).

Almost surely, 2^228142772 is an apocalyptic number.

228142772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

228142772 is an abundant number, since it is smaller than the sum of its proper divisors (247986700).

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

228142772 is a wasteful number, since it uses less digits than its factorization.

228142772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6048 (or 6046 counting only the distinct ones).

The product of its digits is 25088, while the sum is 35.

The square root of 228142772 is about 15104.3957840094. The cubic root of 228142772 is about 611.0389639810.

The spelling of 228142772 in words is "two hundred twenty-eight million, one hundred forty-two thousand, seven hundred seventy-two".