28950390 has 48 divisors (see below), whose sum is σ = 86025888. Its totient is φ = 6617088.

The previous prime is 28950379. The next prime is 28950421. The reversal of 28950390 is 9305982.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22347 + ... + 23606.

It is an arithmetic number, because the mean of its divisors is an integer number (1792206).

Almost surely, 2^28950390 is an apocalyptic number.

28950390 is an abundant number, since it is smaller than the sum of its proper divisors (57075498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28950390 is a wasteful number, since it uses less digits than its factorization.

28950390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45973 (or 45970 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 28950390 is about 5380.5566626512. The cubic root of 28950390 is about 307.0563898864.

The spelling of 28950390 in words is "twenty-eight million, nine hundred fifty thousand, three hundred ninety".