227928820 has 24 divisors (see below), whose sum is σ = 547029504. Its totient is φ = 78146976.

The previous prime is 227928817. The next prime is 227928823. The reversal of 227928820 is 28829722.

It is an interprime number because it is at equal distance from previous prime (227928817) and next prime (227928823).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227928823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813892 + ... + 814171.

It is an arithmetic number, because the mean of its divisors is an integer number (22792896).

Almost surely, 2^227928820 is an apocalyptic number.

227928820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227928820 is an abundant number, since it is smaller than the sum of its proper divisors (319100684).

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

227928820 is a wasteful number, since it uses less digits than its factorization.

227928820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628079 (or 1628077 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 227928820 is about 15097.3116812233. The cubic root of 227928820 is about 610.8478937203.

The spelling of 227928820 in words is "two hundred twenty-seven million, nine hundred twenty-eight thousand, eight hundred twenty".