228647760 has 160 divisors (see below), whose sum is σ = 778557312. Its totient is φ = 55050240.

The previous prime is 228647759. The next prime is 228647789. The reversal of 228647760 is 67746822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 678312 + ... + 678648.

Almost surely, 2^228647760 is an apocalyptic number.

228647760 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 228647760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389278656).

228647760 is an abundant number, since it is smaller than the sum of its proper divisors (549909552).

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

228647760 is a wasteful number, since it uses less digits than its factorization.

228647760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 228647760 is about 15121.1031343616. The cubic root of 228647760 is about 611.4894712849.

The spelling of 228647760 in words is "two hundred twenty-eight million, six hundred forty-seven thousand, seven hundred sixty".