28749174 has 16 divisors (see below), whose sum is σ = 57576960. Its totient is φ = 9569960.

The previous prime is 28749169. The next prime is 28749181. The reversal of 28749174 is 47194782.

It is a happy number.

It is a Curzon number.

It is a congruent 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, 2179 + ... + 7889.

It is an arithmetic number, because the mean of its divisors is an integer number (3598560).

Almost surely, 2^28749174 is an apocalyptic number.

28749174 is an abundant number, since it is smaller than the sum of its proper divisors (28827786).

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

28749174 is a wasteful number, since it uses less digits than its factorization.

28749174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555.

The product of its digits is 112896, while the sum is 42.

The square root of 28749174 is about 5361.8256219314. The cubic root of 28749174 is about 306.3433499127.

The spelling of 28749174 in words is "twenty-eight million, seven hundred forty-nine thousand, one hundred seventy-four".