228732570 has 192 divisors, whose sum is σ = 695485440. Its totient is φ = 51609600.

The previous prime is 228732551. The next prime is 228732587. The reversal of 228732570 is 75237822.

It is a happy number.

228732570 is a `hidden beast` number, since 2 + 2 + 87 + 3 + 2 + 570 = 666.

228732570 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 889882 + ... + 890138.

It is an arithmetic number, because the mean of its divisors is an integer number (3622320).

Almost surely, 2^228732570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228732570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347742720).

228732570 is an abundant number, since it is smaller than the sum of its proper divisors (466752870).

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

228732570 is a wasteful number, since it uses less digits than its factorization.

228732570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 228732570 is about 15123.9072332516. The cubic root of 228732570 is about 611.5650664731.

The spelling of 228732570 in words is "two hundred twenty-eight million, seven hundred thirty-two thousand, five hundred seventy".