228591624 has 64 divisors (see below), whose sum is σ = 591523200. Its totient is φ = 73557504.

The previous prime is 228591619. The next prime is 228591631. The reversal of 228591624 is 426195822.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120717 + ... + 122595.

It is an arithmetic number, because the mean of its divisors is an integer number (9242550).

Almost surely, 2^228591624 is an apocalyptic number.

228591624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228591624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295761600).

228591624 is an abundant number, since it is smaller than the sum of its proper divisors (362931576).

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

228591624 is a wasteful number, since it uses less digits than its factorization.

228591624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062 (or 2058 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 228591624 is about 15119.2468066369. The cubic root of 228591624 is about 611.4394243152.

The spelling of 228591624 in words is "two hundred twenty-eight million, five hundred ninety-one thousand, six hundred twenty-four".