1233228528 has 120 divisors (see below), whose sum is σ = 3961651200. Its totient is φ = 350808192.

The previous prime is 1233228487. The next prime is 1233228533. The reversal of 1233228528 is 8258223321.

It is a happy number.

1233228528 is a `hidden beast` number, since 123 + 3 + 2 + 2 + 8 + 528 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1233228492 and 1233228501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238353 + ... + 243471.

It is an arithmetic number, because the mean of its divisors is an integer number (33013760).

Almost surely, 2^1233228528 is an apocalyptic number.

1233228528 is a gapful number since it is divisible by the number (18) 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 1233228528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1980825600).

1233228528 is an abundant number, since it is smaller than the sum of its proper divisors (2728422672).

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

1233228528 is a wasteful number, since it uses less digits than its factorization.

1233228528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5379 (or 5370 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 1233228528 is about 35117.3536588394. The cubic root of 1233228528 is about 1072.3778973256.

The spelling of 1233228528 in words is "one billion, two hundred thirty-three million, two hundred twenty-eight thousand, five hundred twenty-eight".