28470807 has 6 divisors (see below), whose sum is σ = 41124512. Its totient is φ = 18980532.

The previous prime is 28470791. The next prime is 28470809. The reversal of 28470807 is 70807482.

It is not a de Polignac number, because 28470807 - 2⁴ = 28470791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28470809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1581703 + ... + 1581720.

Almost surely, 2^28470807 is an apocalyptic number.

28470807 is a deficient number, since it is larger than the sum of its proper divisors (12653705).

28470807 is a wasteful number, since it uses less digits than its factorization.

28470807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163429 (or 3163426 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 28470807 is about 5335.8042505324. The cubic root of 28470807 is about 305.3514072059.

The spelling of 28470807 in words is "twenty-eight million, four hundred seventy thousand, eight hundred seven".