28233432 has 24 divisors (see below), whose sum is σ = 76465740. Its totient is φ = 9411120.

The previous prime is 28233421. The next prime is 28233437. The reversal of 28233432 is 23433282.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 28233396 and 28233405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28233437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 195994 + ... + 196137.

Almost surely, 2^28233432 is an apocalyptic number.

It is an amenable number.

28233432 is an abundant number, since it is smaller than the sum of its proper divisors (48232308).

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

28233432 is a wasteful number, since it uses less digits than its factorization.

28233432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392143 (or 392136 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 28233432 is about 5313.5140914465. The cubic root of 28233432 is about 304.5004165751.

The spelling of 28233432 in words is "twenty-eight million, two hundred thirty-three thousand, four hundred thirty-two".