28295432 has 32 divisors (see below), whose sum is σ = 58324320. Its totient is φ = 12762240.

The previous prime is 28295431. The next prime is 28295441. The reversal of 28295432 is 23459282.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28295392 and 28295401.

It is not an unprimeable number, because it can be changed into a prime (28295431) 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 7 ways as a sum of consecutive naturals, for example, 10883 + ... + 13229.

It is an arithmetic number, because the mean of its divisors is an integer number (1822635).

Almost surely, 2^28295432 is an apocalyptic number.

28295432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28295432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29162160).

28295432 is an abundant number, since it is smaller than the sum of its proper divisors (30028888).

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

28295432 is a wasteful number, since it uses less digits than its factorization.

28295432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501 (or 2497 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 28295432 is about 5319.3450724690. The cubic root of 28295432 is about 304.7231457064.

The spelling of 28295432 in words is "twenty-eight million, two hundred ninety-five thousand, four hundred thirty-two".