228757760 has 216 divisors, whose sum is σ = 691591488. Its totient is φ = 70963200.

The previous prime is 228757751. The next prime is 228757787. The reversal of 228757760 is 67757822.

It is a happy number.

It is a super-2 number, since 2×228757760² = 104660225520435200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1084055 + ... + 1084265.

Almost surely, 2^228757760 is an apocalyptic number.

228757760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228757760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345795744).

228757760 is an abundant number, since it is smaller than the sum of its proper divisors (462833728).

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

228757760 is a wasteful number, since it uses less digits than its factorization.

228757760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 228757760 is about 15124.7399977653. The cubic root of 228757760 is about 611.5875159193.

The spelling of 228757760 in words is "two hundred twenty-eight million, seven hundred fifty-seven thousand, seven hundred sixty".