28432292 has 24 divisors (see below), whose sum is σ = 56977536. Its totient is φ = 12161088.

The previous prime is 28432289. The next prime is 28432297. The reversal of 28432292 is 29223482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28432297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27008 + ... + 28040.

It is an arithmetic number, because the mean of its divisors is an integer number (2374064).

Almost surely, 2^28432292 is an apocalyptic number.

It is an amenable number.

28432292 is an abundant number, since it is smaller than the sum of its proper divisors (28545244).

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

28432292 is a wasteful number, since it uses less digits than its factorization.

28432292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027 (or 2025 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 28432292 is about 5332.1939199545. The cubic root of 28432292 is about 305.2136530419.

It can be divided in two parts, 2843 and 2292, that multiplied together give a palindrome (6516156).

The spelling of 28432292 in words is "twenty-eight million, four hundred thirty-two thousand, two hundred ninety-two".