28999485 has 16 divisors (see below), whose sum is σ = 51554880. Its totient is φ = 15466320.

The previous prime is 28999447. The next prime is 28999489. The reversal of 28999485 is 58499982.

It is not a de Polignac number, because 28999485 - 2⁷ = 28999357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28999489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107271 + ... + 107540.

It is an arithmetic number, because the mean of its divisors is an integer number (3222180).

Almost surely, 2^28999485 is an apocalyptic number.

It is an amenable number.

28999485 is a deficient number, since it is larger than the sum of its proper divisors (22555395).

28999485 is a wasteful number, since it uses less digits than its factorization.

28999485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214825 (or 214819 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 28999485 is about 5385.1169903726. The cubic root of 28999485 is about 307.2298638875.

The spelling of 28999485 in words is "twenty-eight million, nine hundred ninety-nine thousand, four hundred eighty-five".