28521496 has 8 divisors (see below), whose sum is σ = 53477820. Its totient is φ = 14260744.

The previous prime is 28521443. The next prime is 28521497. The reversal of 28521496 is 69412582.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28521497) 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 as a sum of consecutive naturals, namely, 1782586 + ... + 1782601.

Almost surely, 2^28521496 is an apocalyptic number.

It is an amenable number.

28521496 is a deficient number, since it is larger than the sum of its proper divisors (24956324).

28521496 is a wasteful number, since it uses less digits than its factorization.

28521496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565193 (or 3565189 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 28521496 is about 5340.5520313915. The cubic root of 28521496 is about 305.5325141315.

The spelling of 28521496 in words is "twenty-eight million, five hundred twenty-one thousand, four hundred ninety-six".