28123874 has 8 divisors (see below), whose sum is σ = 42398400. Its totient is φ = 13991076.

The previous prime is 28123873. The next prime is 28123883. The reversal of 28123874 is 47832182.

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

It is not an unprimeable number, because it can be changed into a prime (28123873) 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, 34934 + ... + 35729.

It is an arithmetic number, because the mean of its divisors is an integer number (5299800).

Almost surely, 2^28123874 is an apocalyptic number.

28123874 is a deficient number, since it is larger than the sum of its proper divisors (14274526).

28123874 is a wasteful number, since it uses less digits than its factorization.

28123874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70864.

The product of its digits is 21504, while the sum is 35.

The square root of 28123874 is about 5303.1946975385. The cubic root of 28123874 is about 304.1060413189.

The spelling of 28123874 in words is "twenty-eight million, one hundred twenty-three thousand, eight hundred seventy-four".