28364807 has 8 divisors (see below), whose sum is σ = 28875984. Its totient is φ = 27857088.

The previous prime is 28364797. The next prime is 28364839. The reversal of 28364807 is 70846382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28364807 is a prime.

It is a super-2 number, since 2×28364807² = 1609124552294498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28364867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19973 + ... + 21345.

It is an arithmetic number, because the mean of its divisors is an integer number (3609498).

Almost surely, 2^28364807 is an apocalyptic number.

28364807 is a deficient number, since it is larger than the sum of its proper divisors (511177).

28364807 is a wasteful number, since it uses less digits than its factorization.

28364807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 28364807 is about 5325.8620898405. The cubic root of 28364807 is about 304.9719834518.

The spelling of 28364807 in words is "twenty-eight million, three hundred sixty-four thousand, eight hundred seven".