28080497 has 8 divisors (see below), whose sum is σ = 29110440. Its totient is φ = 27054720.

The previous prime is 28080473. The next prime is 28080511. The reversal of 28080497 is 79408082.

It can be written as a sum of positive squares in 4 ways, for example, as 19324816 + 8755681 = 4396^2 + 2959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28080497 - 2²² = 23886193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28080497.

It is not an unprimeable number, because it can be changed into a prime (28080457) 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, 20597 + ... + 21917.

It is an arithmetic number, because the mean of its divisors is an integer number (3638805).

Almost surely, 2^28080497 is an apocalyptic number.

It is an amenable number.

28080497 is a deficient number, since it is larger than the sum of its proper divisors (1029943).

28080497 is a wasteful number, since it uses less digits than its factorization.

28080497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 28080497 is about 5299.1034147297. The cubic root of 28080497 is about 303.9496143699.

The spelling of 28080497 in words is "twenty-eight million, eighty thousand, four hundred ninety-seven".