28990350 has 72 divisors (see below), whose sum is σ = 81302832. Its totient is φ = 7392000.

The previous prime is 28990349. The next prime is 28990361. The reversal of 28990350 is 5309982.

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 35 ways as a sum of consecutive naturals, for example, 8950 + ... + 11750.

It is an arithmetic number, because the mean of its divisors is an integer number (1129206).

Almost surely, 2^28990350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28990350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40651416).

28990350 is an abundant number, since it is smaller than the sum of its proper divisors (52312482).

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

28990350 is a wasteful number, since it uses less digits than its factorization.

28990350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842 (or 2834 counting only the distinct ones).

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

The square root of 28990350 is about 5384.2687525791. The cubic root of 28990350 is about 307.1976007910.

The spelling of 28990350 in words is "twenty-eight million, nine hundred ninety thousand, three hundred fifty".