28998742 has 8 divisors (see below), whose sum is σ = 43544736. Its totient is φ = 14483832.

The previous prime is 28998737. The next prime is 28998751. The reversal of 28998742 is 24789982.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5278 + ... + 9265.

It is an arithmetic number, because the mean of its divisors is an integer number (5443092).

Almost surely, 2^28998742 is an apocalyptic number.

28998742 is a deficient number, since it is larger than the sum of its proper divisors (14545994).

28998742 is a wasteful number, since it uses less digits than its factorization.

28998742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15542.

The product of its digits is 580608, while the sum is 49.

The square root of 28998742 is about 5385.0480035001. The cubic root of 28998742 is about 307.2272400048.

The spelling of 28998742 in words is "twenty-eight million, nine hundred ninety-eight thousand, seven hundred forty-two".