228528372 has 24 divisors (see below), whose sum is σ = 537435136. Its totient is φ = 75575808.

The previous prime is 228528361. The next prime is 228528379. The reversal of 228528372 is 273825822.

It is a self number, because there is not a number n which added to its sum of digits gives 228528372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228528379) 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, 73453 + ... + 76500.

Almost surely, 2^228528372 is an apocalyptic number.

It is an amenable number.

228528372 is an abundant number, since it is smaller than the sum of its proper divisors (308906764).

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

228528372 is a wasteful number, since it uses less digits than its factorization.

228528372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150087 (or 150085 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 228528372 is about 15117.1548910501. The cubic root of 228528372 is about 611.3830233945.

The spelling of 228528372 in words is "two hundred twenty-eight million, five hundred twenty-eight thousand, three hundred seventy-two".