28432464 has 20 divisors (see below), whose sum is σ = 73450656. Its totient is φ = 9477472.

The previous prime is 28432421. The next prime is 28432471. The reversal of 28432464 is 46423482.

It is a super-2 number, since 2×28432464² = 1616810018222592, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

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, 296124 + ... + 296219.

Almost surely, 2^28432464 is an apocalyptic number.

28432464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28432464 is an abundant number, since it is smaller than the sum of its proper divisors (45018192).

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

28432464 is a wasteful number, since it uses less digits than its factorization.

28432464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592354 (or 592348 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

The square root of 28432464 is about 5332.2100483758. The cubic root of 28432464 is about 305.2142684999.

The spelling of 28432464 in words is "twenty-eight million, four hundred thirty-two thousand, four hundred sixty-four".