28133914 has 8 divisors (see below), whose sum is σ = 42916320. Its totient is φ = 13828476.

The previous prime is 28133887. The next prime is 28133921. The reversal of 28133914 is 41933182.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119094 + ... + 119329.

It is an arithmetic number, because the mean of its divisors is an integer number (5364540).

Almost surely, 2^28133914 is an apocalyptic number.

28133914 is a deficient number, since it is larger than the sum of its proper divisors (14782406).

28133914 is a wasteful number, since it uses less digits than its factorization.

28133914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238484.

The product of its digits is 5184, while the sum is 31.

The square root of 28133914 is about 5304.1412122982. The cubic root of 28133914 is about 304.1422248286.

The spelling of 28133914 in words is "twenty-eight million, one hundred thirty-three thousand, nine hundred fourteen".