28114091 has 8 divisors (see below), whose sum is σ = 29652480. Its totient is φ = 26581608.

The previous prime is 28114087. The next prime is 28114103. The reversal of 28114091 is 19041182.

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

It is not a de Polignac number, because 28114091 - 2² = 28114087 is a prime.

It is a super-2 number, since 2×28114091² = 1580804225512562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28114091.

It is not an unprimeable number, because it can be changed into a prime (28114291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11150 + ... + 13436.

It is an arithmetic number, because the mean of its divisors is an integer number (3706560).

Almost surely, 2^28114091 is an apocalyptic number.

28114091 is a deficient number, since it is larger than the sum of its proper divisors (1538389).

28114091 is a wasteful number, since it uses less digits than its factorization.

28114091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 28114091 is about 5302.2722487628. The cubic root of 28114091 is about 304.0707757360.

The spelling of 28114091 in words is "twenty-eight million, one hundred fourteen thousand, ninety-one".