228437556 has 24 divisors (see below), whose sum is σ = 547428000. Its totient is φ = 74087712.

The previous prime is 228437549. The next prime is 228437563. The reversal of 228437556 is 655734822.

It is an interprime number because it is at equal distance from previous prime (228437549) and next prime (228437563).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256806 + ... + 257693.

It is an arithmetic number, because the mean of its divisors is an integer number (22809500).

Almost surely, 2^228437556 is an apocalyptic number.

It is an amenable number.

228437556 is an abundant number, since it is smaller than the sum of its proper divisors (318990444).

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

228437556 is a wasteful number, since it uses less digits than its factorization.

228437556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514543 (or 514541 counting only the distinct ones).

The product of its digits is 403200, while the sum is 42.

The square root of 228437556 is about 15114.1508527605. The cubic root of 228437556 is about 611.3020258409.

The spelling of 228437556 in words is "two hundred twenty-eight million, four hundred thirty-seven thousand, five hundred fifty-six".