28274250 has 32 divisors (see below), whose sum is σ = 70574400. Its totient is φ = 7539600.

The previous prime is 28274249. The next prime is 28274251. The reversal of 28274250 is 5247282.

It is an interprime number because it is at equal distance from previous prime (28274249) and next prime (28274251).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (28274251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18100 + ... + 19599.

It is an arithmetic number, because the mean of its divisors is an integer number (2205450).

Almost surely, 2^28274250 is an apocalyptic number.

28274250 is an abundant number, since it is smaller than the sum of its proper divisors (42300150).

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

28274250 is a wasteful number, since it uses less digits than its factorization.

28274250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37719 (or 37709 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 28274250 is about 5317.3536651233. The cubic root of 28274250 is about 304.6470879999.

The spelling of 28274250 in words is "twenty-eight million, two hundred seventy-four thousand, two hundred fifty".