28906593 has 8 divisors (see below), whose sum is σ = 38689728. Its totient is φ = 19197264.

The previous prime is 28906567. The next prime is 28906627. The reversal of 28906593 is 39560982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28906593 - 2⁶ = 28906529 is a prime.

It is a super-2 number, since 2×28906593² = 1671182237735298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28906523) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17530 + ... + 19107.

It is an arithmetic number, because the mean of its divisors is an integer number (4836216).

Almost surely, 2^28906593 is an apocalyptic number.

It is an amenable number.

28906593 is a deficient number, since it is larger than the sum of its proper divisors (9783135).

28906593 is a wasteful number, since it uses less digits than its factorization.

28906593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36903.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 28906593 is about 5376.4851901591. The cubic root of 28906593 is about 306.9014704305.

The spelling of 28906593 in words is "twenty-eight million, nine hundred six thousand, five hundred ninety-three".