28453432 has 16 divisors (see below), whose sum is σ = 60971760. Its totient is φ = 12194304.

The previous prime is 28453423. The next prime is 28453433. The reversal of 28453432 is 23435482.

It is a junction number, because it is equal to n+sod(n) for n = 28453394 and 28453403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28453433) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 253993 + ... + 254104.

It is an arithmetic number, because the mean of its divisors is an integer number (3810735).

Almost surely, 2^28453432 is an apocalyptic number.

It is an amenable number.

28453432 is an abundant number, since it is smaller than the sum of its proper divisors (32518328).

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

28453432 is a wasteful number, since it uses less digits than its factorization.

28453432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508110 (or 508106 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

The square root of 28453432 is about 5334.1758501197. The cubic root of 28453432 is about 305.2892785334.

The spelling of 28453432 in words is "twenty-eight million, four hundred fifty-three thousand, four hundred thirty-two".