28150975 has 12 divisors (see below), whose sum is σ = 35162680. Its totient is φ = 22356000.

The previous prime is 28150973. The next prime is 28150981. The reversal of 28150975 is 57905182.

It is not a de Polignac number, because 28150975 - 2¹ = 28150973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28150973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 576 + ... + 7525.

Almost surely, 2^28150975 is an apocalyptic number.

28150975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28150975 is a deficient number, since it is larger than the sum of its proper divisors (7011705).

28150975 is a wasteful number, since it uses less digits than its factorization.

28150975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8250 (or 8245 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 28150975 is about 5305.7492402110. The cubic root of 28150975 is about 304.2036918295.

The spelling of 28150975 in words is "twenty-eight million, one hundred fifty thousand, nine hundred seventy-five".