28735432 has 16 divisors (see below), whose sum is σ = 58777200. Its totient is φ = 13061520.

The previous prime is 28735403. The next prime is 28735463. The reversal of 28735432 is 23453782.

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, 163182 + ... + 163357.

It is an arithmetic number, because the mean of its divisors is an integer number (3673575).

Almost surely, 2^28735432 is an apocalyptic number.

28735432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28735432 is an abundant number, since it is smaller than the sum of its proper divisors (30041768).

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

28735432 is a wasteful number, since it uses less digits than its factorization.

28735432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326556 (or 326552 counting only the distinct ones).

The product of its digits is 40320, while the sum is 34.

The square root of 28735432 is about 5360.5440022445. The cubic root of 28735432 is about 306.2945318000.

The spelling of 28735432 in words is "twenty-eight million, seven hundred thirty-five thousand, four hundred thirty-two".