28250156 has 12 divisors (see below), whose sum is σ = 53932200. Its totient is φ = 12840960.

The previous prime is 28250143. The next prime is 28250161. The reversal of 28250156 is 65105282.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320981 + ... + 321068.

It is an arithmetic number, because the mean of its divisors is an integer number (4494350).

Almost surely, 2^28250156 is an apocalyptic number.

It is an amenable number.

28250156 is a deficient number, since it is larger than the sum of its proper divisors (25682044).

28250156 is a wasteful number, since it uses less digits than its factorization.

28250156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642064 (or 642062 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 28250156 is about 5315.0875815926. The cubic root of 28250156 is about 304.5605280509.

The spelling of 28250156 in words is "twenty-eight million, two hundred fifty thousand, one hundred fifty-six".