28985077 has 4 divisors (see below), whose sum is σ = 31620096. Its totient is φ = 26350060.

The previous prime is 28985069. The next prime is 28985113. The reversal of 28985077 is 77058982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28985077 - 2³ = 28985069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28985027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317493 + ... + 1317514.

It is an arithmetic number, because the mean of its divisors is an integer number (7905024).

Almost surely, 2^28985077 is an apocalyptic number.

It is an amenable number.

28985077 is a deficient number, since it is larger than the sum of its proper divisors (2635019).

28985077 is a wasteful number, since it uses less digits than its factorization.

28985077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635018.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 28985077 is about 5383.7790630746. The cubic root of 28985077 is about 307.1789744645.

The spelling of 28985077 in words is "twenty-eight million, nine hundred eighty-five thousand, seventy-seven".