1523320128 has 112 divisors (see below), whose sum is σ = 4885456320. Its totient is φ = 461606400.

The previous prime is 1523320069. The next prime is 1523320133. The reversal of 1523320128 is 8210233251.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21063 + ... + 59078.

Almost surely, 2^1523320128 is an apocalyptic number.

1523320128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1523320128 is an abundant number, since it is smaller than the sum of its proper divisors (3362136192).

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

1523320128 is a wasteful number, since it uses less digits than its factorization.

1523320128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80173 (or 80157 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1523320128 is about 39029.7338960952. The cubic root of 1523320128 is about 1150.6159593739.

Adding to 1523320128 its reverse (8210233251), we get a palindrome (9733553379).

The spelling of 1523320128 in words is "one billion, five hundred twenty-three million, three hundred twenty thousand, one hundred twenty-eight".