228738672 has 240 divisors, whose sum is σ = 723891168. Its totient is φ = 67092480.

The previous prime is 228738661. The next prime is 228738683. The reversal of 228738672 is 276837822.

It is an interprime number because it is at equal distance from previous prime (228738661) and next prime (228738683).

Its product of digits (451584) is a multiple of the sum of its prime factors (168).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4315798 + ... + 4315850.

Almost surely, 2^228738672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228738672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361945584).

228738672 is an abundant number, since it is smaller than the sum of its proper divisors (495152496).

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

228738672 is a wasteful number, since it uses less digits than its factorization.

228738672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 159 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 228738672 is about 15124.1089654895. The cubic root of 228738672 is about 611.5705047554.

The spelling of 228738672 in words is "two hundred twenty-eight million, seven hundred thirty-eight thousand, six hundred seventy-two".