227888820 has 72 divisors (see below), whose sum is σ = 707362656. Its totient is φ = 59355072.

The previous prime is 227888819. The next prime is 227888827. The reversal of 227888820 is 28888722.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227888827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6982 + ... + 22461.

Almost surely, 2^227888820 is an apocalyptic number.

227888820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227888820 is an abundant number, since it is smaller than the sum of its proper divisors (479473836).

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

227888820 is a wasteful number, since it uses less digits than its factorization.

227888820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29501 (or 29496 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The square root of 227888820 is about 15095.9868839371. The cubic root of 227888820 is about 610.8121583750.

The spelling of 227888820 in words is "two hundred twenty-seven million, eight hundred eighty-eight thousand, eight hundred twenty".