228280680 has 80 divisors (see below), whose sum is σ = 767287620. Its totient is φ = 60873984.

The previous prime is 228280643. The next prime is 228280693. The reversal of 228280680 is 86082822.

228280680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 190605636 + 37675044 = 13806^2 + 6138^2 .

It is a super-2 number, since 2×228280680² = 104224137722524800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31989 + ... + 38468.

Almost surely, 2^228280680 is an apocalyptic number.

228280680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228280680 is an abundant number, since it is smaller than the sum of its proper divisors (539006940).

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

228280680 is a wasteful number, since it uses less digits than its factorization.

228280680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70480 (or 70467 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 228280680 is about 15108.9602554246. The cubic root of 228280680 is about 611.1620596886.

The spelling of 228280680 in words is "two hundred twenty-eight million, two hundred eighty thousand, six hundred eighty".