281970228 has 24 divisors (see below), whose sum is σ = 696632832. Its totient is φ = 88461184.

The previous prime is 281970209. The next prime is 281970233. The reversal of 281970228 is 822079182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690900 + ... + 691307.

It is an arithmetic number, because the mean of its divisors is an integer number (29026368).

Almost surely, 2^281970228 is an apocalyptic number.

It is an amenable number.

281970228 is an abundant number, since it is smaller than the sum of its proper divisors (414662604).

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

281970228 is a wasteful number, since it uses less digits than its factorization.

281970228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382231 (or 1382229 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 281970228 is about 16791.9691519488. The cubic root of 281970228 is about 655.7441403797.

The spelling of 281970228 in words is "two hundred eighty-one million, nine hundred seventy thousand, two hundred twenty-eight".