28899518 has 8 divisors (see below), whose sum is σ = 43393320. Its totient is φ = 14435080.

The previous prime is 28899511. The next prime is 28899529. The reversal of 28899518 is 81599882.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28899511) 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, 4688 + ... + 8931.

It is an arithmetic number, because the mean of its divisors is an integer number (5424165).

Almost surely, 2^28899518 is an apocalyptic number.

28899518 is a deficient number, since it is larger than the sum of its proper divisors (14493802).

28899518 is a wasteful number, since it uses less digits than its factorization.

28899518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14682.

The product of its digits is 414720, while the sum is 50.

The square root of 28899518 is about 5375.8271921631. The cubic root of 28899518 is about 306.8764299484.

The spelling of 28899518 in words is "twenty-eight million, eight hundred ninety-nine thousand, five hundred eighteen".