28066704 has 20 divisors (see below), whose sum is σ = 72505776. Its totient is φ = 9355552.

The previous prime is 28066697. The next prime is 28066723. The reversal of 28066704 is 40766082.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292314 + ... + 292409.

Almost surely, 2^28066704 is an apocalyptic number.

28066704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28066704 is an abundant number, since it is smaller than the sum of its proper divisors (44439072).

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

28066704 is a wasteful number, since it uses less digits than its factorization.

28066704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584734 (or 584728 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 28066704 is about 5297.8018082975. The cubic root of 28066704 is about 303.8998400414.

The spelling of 28066704 in words is "twenty-eight million, sixty-six thousand, seven hundred four".