28761807 has 16 divisors (see below), whose sum is σ = 40718592. Its totient is φ = 17996160.

The previous prime is 28761779. The next prime is 28761829. The reversal of 28761807 is 70816782.

It is not a de Polignac number, because 28761807 - 2¹⁰ = 28760783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28761847) 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, 27382 + ... + 28412.

It is an arithmetic number, because the mean of its divisors is an integer number (2544912).

Almost surely, 2^28761807 is an apocalyptic number.

28761807 is a deficient number, since it is larger than the sum of its proper divisors (11956785).

28761807 is a wasteful number, since it uses less digits than its factorization.

28761807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 28761807 is about 5363.0035427920. The cubic root of 28761807 is about 306.3882146083.

The spelling of 28761807 in words is "twenty-eight million, seven hundred sixty-one thousand, eight hundred seven".