28891035 has 24 divisors (see below), whose sum is σ = 50347440. Its totient is φ = 15325632.

The previous prime is 28891021. The next prime is 28891069. The reversal of 28891035 is 53019882.

It is not a de Polignac number, because 28891035 - 2⁷ = 28890907 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7236 + ... + 10494.

It is an arithmetic number, because the mean of its divisors is an integer number (2097810).

Almost surely, 2^28891035 is an apocalyptic number.

28891035 is a deficient number, since it is larger than the sum of its proper divisors (21456405).

28891035 is a wasteful number, since it uses less digits than its factorization.

28891035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467 (or 3464 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 28891035 is about 5375.0381393996. The cubic root of 28891035 is about 306.8464007566.

The spelling of 28891035 in words is "twenty-eight million, eight hundred ninety-one thousand, thirty-five".