28680802 has 8 divisors (see below), whose sum is σ = 45551916. Its totient is φ = 13496832.

The previous prime is 28680781. The next prime is 28680811. The reversal of 28680802 is 20808682.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27973521 + 707281 = 5289^2 + 841^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 843553 = 28680802 / (2 + 8 + 6 + 8 + 0 + 8 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421743 + ... + 421810.

Almost surely, 2^28680802 is an apocalyptic number.

28680802 is a deficient number, since it is larger than the sum of its proper divisors (16871114).

28680802 is a wasteful number, since it uses less digits than its factorization.

28680802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843572.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 28680802 is about 5355.4460131720. The cubic root of 28680802 is about 306.1003060173.

The spelling of 28680802 in words is "twenty-eight million, six hundred eighty thousand, eight hundred two".