28406998 has 8 divisors (see below), whose sum is σ = 42640560. Its totient is φ = 14193480.

The previous prime is 28406929. The next prime is 28407011. The reversal of 28406998 is 89960482.

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, 738 + ... + 7573.

It is an arithmetic number, because the mean of its divisors is an integer number (5330070).

Almost surely, 2^28406998 is an apocalyptic number.

28406998 is a deficient number, since it is larger than the sum of its proper divisors (14233562).

28406998 is a wasteful number, since it uses less digits than its factorization.

28406998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10022.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 28406998 is about 5329.8215729985. The cubic root of 28406998 is about 305.1231179022.

The spelling of 28406998 in words is "twenty-eight million, four hundred six thousand, nine hundred ninety-eight".