28786416 has 40 divisors (see below), whose sum is σ = 75483264. Its totient is φ = 9451200.

The previous prime is 28786403. The next prime is 28786441. The reversal of 28786416 is 61468782.

It is a super-2 number, since 2×28786416² = 1657315492250112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1260 + ... + 7691.

Almost surely, 2^28786416 is an apocalyptic number.

It is an amenable number.

28786416 is an abundant number, since it is smaller than the sum of its proper divisors (46696848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28786416 is a wasteful number, since it uses less digits than its factorization.

28786416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9029 (or 9023 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 28786416 is about 5365.2973822520. The cubic root of 28786416 is about 306.4755730298.

The spelling of 28786416 in words is "twenty-eight million, seven hundred eighty-six thousand, four hundred sixteen".