28432532 has 12 divisors (see below), whose sum is σ = 50240736. Its totient is φ = 14078040.

The previous prime is 28432529. The next prime is 28432559. The reversal of 28432532 is 23523482.

It is a super-3 number, since 3×28432532³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28432495 and 28432504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34094 + ... + 34917.

It is an arithmetic number, because the mean of its divisors is an integer number (4186728).

Almost surely, 2^28432532 is an apocalyptic number.

It is an amenable number.

28432532 is a deficient number, since it is larger than the sum of its proper divisors (21808204).

28432532 is a wasteful number, since it uses less digits than its factorization.

28432532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69118 (or 69116 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 28432532 is about 5332.2164247150. The cubic root of 28432532 is about 305.2145118198.

The spelling of 28432532 in words is "twenty-eight million, four hundred thirty-two thousand, five hundred thirty-two".