132100728 has 32 divisors (see below), whose sum is σ = 333527760. Its totient is φ = 43596800.

The previous prime is 132100723. The next prime is 132100733. The reversal of 132100728 is 827001231.

It is an interprime number because it is at equal distance from previous prime (132100723) and next prime (132100733).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 132100698 and 132100707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132100723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24825 + ... + 29672.

Almost surely, 2^132100728 is an apocalyptic number.

It is an amenable number.

132100728 is an abundant number, since it is smaller than the sum of its proper divisors (201427032).

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

132100728 is a wasteful number, since it uses less digits than its factorization.

132100728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54607 (or 54603 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 132100728 is about 11493.5080806514. The cubic root of 132100728 is about 509.2938169288.

Adding to 132100728 its reverse (827001231), we get a palindrome (959101959).

The spelling of 132100728 in words is "one hundred thirty-two million, one hundred thousand, seven hundred twenty-eight".