28957075 has 12 divisors (see below), whose sum is σ = 41036560. Its totient is φ = 19856160.

The previous prime is 28957073. The next prime is 28957079. The reversal of 28957075 is 57075982.

It is not a de Polignac number, because 28957075 - 2¹ = 28957073 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28957073) 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, 82560 + ... + 82909.

Almost surely, 2^28957075 is an apocalyptic number.

28957075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28957075 is a deficient number, since it is larger than the sum of its proper divisors (12079485).

28957075 is a wasteful number, since it uses less digits than its factorization.

28957075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165486 (or 165481 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 28957075 is about 5381.1778450447. The cubic root of 28957075 is about 307.0800224292.

The spelling of 28957075 in words is "twenty-eight million, nine hundred fifty-seven thousand, seventy-five".