28941807 has 16 divisors (see below), whose sum is σ = 41720960. Its totient is φ = 17783712.

The previous prime is 28941779. The next prime is 28941823. The reversal of 28941807 is 70814982.

It is not a de Polignac number, because 28941807 - 2¹¹ = 28939759 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28941007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4753 + ... + 8970.

It is an arithmetic number, because the mean of its divisors is an integer number (2607560).

Almost surely, 2^28941807 is an apocalyptic number.

28941807 is a deficient number, since it is larger than the sum of its proper divisors (12779153).

28941807 is a wasteful number, since it uses less digits than its factorization.

28941807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13782.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 28941807 is about 5379.7590094725. The cubic root of 28941807 is about 307.0260422758.

The spelling of 28941807 in words is "twenty-eight million, nine hundred forty-one thousand, eight hundred seven".