28370075 has 12 divisors (see below), whose sum is σ = 35544600. Its totient is φ = 22460160.

The previous prime is 28370029. The next prime is 28370077. The reversal of 28370075 is 57007382.

It is not a de Polignac number, because 28370075 - 2¹⁶ = 28304539 is a prime.

It is a super-2 number, since 2×28370075² = 1609722311011250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28370077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3425 + ... + 8274.

It is an arithmetic number, because the mean of its divisors is an integer number (2962050).

Almost surely, 2^28370075 is an apocalyptic number.

28370075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28370075 is a deficient number, since it is larger than the sum of its proper divisors (7174525).

28370075 is a wasteful number, since it uses less digits than its factorization.

28370075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11806 (or 11801 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 28370075 is about 5326.3566346988. The cubic root of 28370075 is about 304.9908623976.

The spelling of 28370075 in words is "twenty-eight million, three hundred seventy thousand, seventy-five".