28494624 has 24 divisors (see below), whose sum is σ = 74798640. Its totient is φ = 9498176.

The previous prime is 28494619. The next prime is 28494637. The reversal of 28494624 is 42649482.

It is a tau number, because it is divible by the number of its divisors (24).

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, 148314 + ... + 148505.

It is an arithmetic number, because the mean of its divisors is an integer number (3116610).

Almost surely, 2^28494624 is an apocalyptic number.

28494624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28494624 is an abundant number, since it is smaller than the sum of its proper divisors (46304016).

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

28494624 is a wasteful number, since it uses less digits than its factorization.

28494624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296832 (or 296824 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 28494624 is about 5338.0355937367. The cubic root of 28494624 is about 305.4365298074.

The spelling of 28494624 in words is "twenty-eight million, four hundred ninety-four thousand, six hundred twenty-four".