28589746 has 4 divisors (see below), whose sum is σ = 42884622. Its totient is φ = 14294872.

The previous prime is 28589741. The next prime is 28589749. The reversal of 28589746 is 64798582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64798582 = 2 ⋅32399291.

It can be written as a sum of positive squares in only one way, i.e., 27973521 + 616225 = 5289^2 + 785^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28589746.

It is not an unprimeable number, because it can be changed into a prime (28589741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7147435 + ... + 7147438.

Almost surely, 2^28589746 is an apocalyptic number.

28589746 is a deficient number, since it is larger than the sum of its proper divisors (14294876).

28589746 is a wasteful number, since it uses less digits than its factorization.

28589746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14294875.

The product of its digits is 967680, while the sum is 49.

The square root of 28589746 is about 5346.9380022589. The cubic root of 28589746 is about 305.7760261738.

The spelling of 28589746 in words is "twenty-eight million, five hundred eighty-nine thousand, seven hundred forty-six".