28116490 has 8 divisors (see below), whose sum is σ = 50609700. Its totient is φ = 11246592.

The previous prime is 28116467. The next prime is 28116527. The reversal of 28116490 is 9461182.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27888961 + 227529 = 5281^2 + 477^2 .

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

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, 1405815 + ... + 1405834.

Almost surely, 2^28116490 is an apocalyptic number.

28116490 is a deficient number, since it is larger than the sum of its proper divisors (22493210).

28116490 is a wasteful number, since it uses less digits than its factorization.

28116490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811656.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 28116490 is about 5302.4984677037. The cubic root of 28116490 is about 304.0794243652.

The spelling of 28116490 in words is "twenty-eight million, one hundred sixteen thousand, four hundred ninety".