28050778 has 8 divisors (see below), whose sum is σ = 48087072. Its totient is φ = 12021756.

The previous prime is 28050769. The next prime is 28050811. The reversal of 28050778 is 87705082.

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

It is a super-2 number, since 2×28050778² = 1573692292810568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001800 + ... + 1001827.

It is an arithmetic number, because the mean of its divisors is an integer number (6010884).

Almost surely, 2^28050778 is an apocalyptic number.

28050778 is a deficient number, since it is larger than the sum of its proper divisors (20036294).

28050778 is a wasteful number, since it uses less digits than its factorization.

28050778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003636.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 28050778 is about 5296.2985187771. The cubic root of 28050778 is about 303.8423481395.

The spelling of 28050778 in words is "twenty-eight million, fifty thousand, seven hundred seventy-eight".