28237134 has 8 divisors (see below), whose sum is σ = 56474280. Its totient is φ = 9412376.

The previous prime is 28237129. The next prime is 28237147. The reversal of 28237134 is 43173282.

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

28237134 is an admirable number.

It is a super-3 number, since 3×28237134³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

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, 2353089 + ... + 2353100.

It is an arithmetic number, because the mean of its divisors is an integer number (7059285).

Almost surely, 2^28237134 is an apocalyptic number.

28237134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28237134 is a wasteful number, since it uses less digits than its factorization.

28237134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4706194.

The product of its digits is 8064, while the sum is 30.

The square root of 28237134 is about 5313.8624370603. The cubic root of 28237134 is about 304.5137248081.

The spelling of 28237134 in words is "twenty-eight million, two hundred thirty-seven thousand, one hundred thirty-four".