228607444 has 48 divisors (see below), whose sum is σ = 443575440. Its totient is φ = 102435840.

The previous prime is 228607439. The next prime is 228607451. The reversal of 228607444 is 444706822.

It can be written as a sum of positive squares in 8 ways, for example, as 26399044 + 202208400 = 5138^2 + 14220^2 .

It is a super-2 number, since 2×228607444² = 104522726904426272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300024 + ... + 300784.

It is an arithmetic number, because the mean of its divisors is an integer number (9241155).

Almost surely, 2^228607444 is an apocalyptic number.

It is an amenable number.

228607444 is a deficient number, since it is larger than the sum of its proper divisors (214967996).

228607444 is a wasteful number, since it uses less digits than its factorization.

228607444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 37.

The square root of 228607444 is about 15119.7699717952. The cubic root of 228607444 is about 611.4535291606.

The spelling of 228607444 in words is "two hundred twenty-eight million, six hundred seven thousand, four hundred forty-four".