28906190 has 8 divisors (see below), whose sum is σ = 52031160. Its totient is φ = 11562472.

The previous prime is 28906187. The next prime is 28906211. The reversal of 28906190 is 9160982.

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

It is a super-2 number, since 2×28906190² = 1671135640632200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28906190.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445300 + ... + 1445319.

It is an arithmetic number, because the mean of its divisors is an integer number (6503895).

Almost surely, 2^28906190 is an apocalyptic number.

28906190 is a deficient number, since it is larger than the sum of its proper divisors (23124970).

28906190 is a wasteful number, since it uses less digits than its factorization.

28906190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890626.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 28906190 is about 5376.4477120121. The cubic root of 28906190 is about 306.9000442061.

The spelling of 28906190 in words is "twenty-eight million, nine hundred six thousand, one hundred ninety".