228172624 has 10 divisors (see below), whose sum is σ = 442084490. Its totient is φ = 114086304.

The previous prime is 228172613. The next prime is 228172661. The reversal of 228172624 is 426271822.

It can be written as a sum of positive squares in only one way, i.e., 181387024 + 46785600 = 13468^2 + 6840^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 228172624.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7130379 + ... + 7130410.

It is an arithmetic number, because the mean of its divisors is an integer number (44208449).

Almost surely, 2^228172624 is an apocalyptic number.

It is an amenable number.

228172624 is a deficient number, since it is larger than the sum of its proper divisors (213911866).

228172624 is a wasteful number, since it uses less digits than its factorization.

228172624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14260797 (or 14260791 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 228172624 is about 15105.3839408338. The cubic root of 228172624 is about 611.0656138715.

The spelling of 228172624 in words is "two hundred twenty-eight million, one hundred seventy-two thousand, six hundred twenty-four".