228928553424 has 40 divisors (see below), whose sum is σ = 657109737920. Its totient is φ = 76309517664.

The previous prime is 228928553419. The next prime is 228928553431. The reversal of 228928553424 is 424355829822.

228928553424 is a `hidden beast` number, since 2 + 2 + 8 + 9 + 2 + 85 + 534 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 264963172 + ... + 264964035.

It is an arithmetic number, because the mean of its divisors is an integer number (16427743448).

Almost surely, 2^228928553424 is an apocalyptic number.

228928553424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

228928553424 is an abundant number, since it is smaller than the sum of its proper divisors (428181184496).

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

228928553424 is a wasteful number, since it uses less digits than its factorization.

228928553424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529927224 (or 529927212 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 54.

The spelling of 228928553424 in words is "two hundred twenty-eight billion, nine hundred twenty-eight million, five hundred fifty-three thousand, four hundred twenty-four".