28680797 has 16 divisors (see below), whose sum is σ = 31188480. Its totient is φ = 26308800.

The previous prime is 28680781. The next prime is 28680811. The reversal of 28680797 is 79708682.

It is not a de Polignac number, because 28680797 - 2⁴ = 28680781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28680497) 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, 54578 + ... + 55100.

It is an arithmetic number, because the mean of its divisors is an integer number (1949280).

Almost surely, 2^28680797 is an apocalyptic number.

It is an amenable number.

28680797 is a deficient number, since it is larger than the sum of its proper divisors (2507683).

28680797 is a wasteful number, since it uses less digits than its factorization.

28680797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 28680797 is about 5355.4455463575. The cubic root of 28680797 is about 306.1002882296.

The spelling of 28680797 in words is "twenty-eight million, six hundred eighty thousand, seven hundred ninety-seven".