228612726 has 16 divisors (see below), whose sum is σ = 508028400. Its totient is φ = 76204224.

The previous prime is 228612721. The next prime is 228612737. The reversal of 228612726 is 627216822.

228612726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228612721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2116731 + ... + 2116838.

It is an arithmetic number, because the mean of its divisors is an integer number (31751775).

Almost surely, 2^228612726 is an apocalyptic number.

228612726 is an abundant number, since it is smaller than the sum of its proper divisors (279415674).

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

228612726 is a wasteful number, since it uses less digits than its factorization.

228612726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233580 (or 4233574 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 228612726 is about 15119.9446427558. The cubic root of 228612726 is about 611.4582383579.

The spelling of 228612726 in words is "two hundred twenty-eight million, six hundred twelve thousand, seven hundred twenty-six".