28950163 has 4 divisors (see below), whose sum is σ = 31582008. Its totient is φ = 26318320.

The previous prime is 28950161. The next prime is 28950191. The reversal of 28950163 is 36105982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28950163 - 2¹ = 28950161 is a prime.

It is a super-2 number, since 2×28950163² = 1676223875453138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28950161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315906 + ... + 1315927.

It is an arithmetic number, because the mean of its divisors is an integer number (7895502).

Almost surely, 2^28950163 is an apocalyptic number.

28950163 is a deficient number, since it is larger than the sum of its proper divisors (2631845).

28950163 is a wasteful number, since it uses less digits than its factorization.

28950163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631844.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 28950163 is about 5380.5355681382. The cubic root of 28950163 is about 307.0555873413.

The spelling of 28950163 in words is "twenty-eight million, nine hundred fifty thousand, one hundred sixty-three".