28950185 has 8 divisors (see below), whose sum is σ = 37898496. Its totient is φ = 21054640.

The previous prime is 28950161. The next prime is 28950191. The reversal of 28950185 is 58105982.

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

It is a de Polignac number, because none of the positive numbers 2^k-28950185 is a prime.

It is a super-2 number, since 2×28950185² = 1676226423068450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263129 + ... + 263238.

It is an arithmetic number, because the mean of its divisors is an integer number (4737312).

Almost surely, 2^28950185 is an apocalyptic number.

It is an amenable number.

28950185 is a deficient number, since it is larger than the sum of its proper divisors (8948311).

28950185 is a wasteful number, since it uses less digits than its factorization.

28950185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526383.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 28950185 is about 5380.5376125439. The cubic root of 28950185 is about 307.0556651212.

The spelling of 28950185 in words is "twenty-eight million, nine hundred fifty thousand, one hundred eighty-five".