28493632 has 28 divisors (see below), whose sum is σ = 59870340. Its totient is φ = 13408256.

The previous prime is 28493629. The next prime is 28493657. The reversal of 28493632 is 23639482.

It can be written as a sum of positive squares in 2 ways, for example, as 22810176 + 5683456 = 4776^2 + 2384^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28493591 and 28493600.

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, 12007 + ... + 14182.

Almost surely, 2^28493632 is an apocalyptic number.

It is an amenable number.

28493632 is an abundant number, since it is smaller than the sum of its proper divisors (31376708).

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

28493632 is a wasteful number, since it uses less digits than its factorization.

28493632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26218 (or 26208 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 28493632 is about 5337.9426748514. The cubic root of 28493632 is about 305.4329853194.

The spelling of 28493632 in words is "twenty-eight million, four hundred ninety-three thousand, six hundred thirty-two".