227256840 has 80 divisors (see below), whose sum is σ = 763846380. Its totient is φ = 60600960.

The previous prime is 227256839. The next prime is 227256857. The reversal of 227256840 is 48652722.

227256840 is a `hidden beast` number, since 22 + 72 + 568 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 226984356 + 272484 = 15066^2 + 522^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 227256795 and 227256804.

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, 31831 + ... + 38310.

Almost surely, 2^227256840 is an apocalyptic number.

227256840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227256840 is an abundant number, since it is smaller than the sum of its proper divisors (536589540).

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

227256840 is a wasteful number, since it uses less digits than its factorization.

227256840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70164 (or 70151 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 227256840 is about 15075.0402984536. The cubic root of 227256840 is about 610.2470020036.

The spelling of 227256840 in words is "two hundred twenty-seven million, two hundred fifty-six thousand, eight hundred forty".