28494684 has 18 divisors (see below), whose sum is σ = 72028320. Its totient is φ = 9498216.

The previous prime is 28494667. The next prime is 28494691. The reversal of 28494684 is 48649482.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 395724 + ... + 395795.

Almost surely, 2^28494684 is an apocalyptic number.

It is an amenable number.

28494684 is an abundant number, since it is smaller than the sum of its proper divisors (43533636).

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

28494684 is a wasteful number, since it uses less digits than its factorization.

28494684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791529 (or 791524 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 28494684 is about 5338.0412137787. The cubic root of 28494684 is about 305.4367441891.

The spelling of 28494684 in words is "twenty-eight million, four hundred ninety-four thousand, six hundred eighty-four".