28296807 has 16 divisors (see below), whose sum is σ = 47039232. Its totient is φ = 14699520.

The previous prime is 28296803. The next prime is 28296817. The reversal of 28296807 is 70869282.

It is a happy number.

It is not a de Polignac number, because 28296807 - 2² = 28296803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28296803) 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, 61018 + ... + 61479.

It is an arithmetic number, because the mean of its divisors is an integer number (2939952).

Almost surely, 2^28296807 is an apocalyptic number.

28296807 is a deficient number, since it is larger than the sum of its proper divisors (18742425).

28296807 is a wasteful number, since it uses less digits than its factorization.

28296807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122518.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 28296807 is about 5319.4743161331. The cubic root of 28296807 is about 304.7280815743.

It can be divided in two parts, 28 and 296807, that added together give a triangular number (296835 = T₇₇₀).

The spelling of 28296807 in words is "twenty-eight million, two hundred ninety-six thousand, eight hundred seven".