28007092 has 24 divisors (see below), whose sum is σ = 52141320. Its totient is φ = 13117440.

The previous prime is 28007087. The next prime is 28007099. The reversal of 28007092 is 29070082.

It can be written as a sum of positive squares in 4 ways, for example, as 6533136 + 21473956 = 2556^2 + 4634^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28007092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28007099) 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, 15534 + ... + 17242.

It is an arithmetic number, because the mean of its divisors is an integer number (2172555).

Almost surely, 2^28007092 is an apocalyptic number.

It is an amenable number.

28007092 is a deficient number, since it is larger than the sum of its proper divisors (24134228).

28007092 is a wasteful number, since it uses less digits than its factorization.

28007092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971 (or 1969 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 28007092 is about 5292.1727107115. The cubic root of 28007092 is about 303.6845325102.

The spelling of 28007092 in words is "twenty-eight million, seven thousand, ninety-two".