45728293 has 4 divisors (see below), whose sum is σ = 49245868. Its totient is φ = 42210720.

The previous prime is 45728251. The next prime is 45728297. The reversal of 45728293 is 39282754.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30658369 + 15069924 = 5537^2 + 3882^2 .

It is a cyclic number.

It is not a de Polignac number, because 45728293 - 2¹⁷ = 45597221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45728297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1758768 + ... + 1758793.

It is an arithmetic number, because the mean of its divisors is an integer number (12311467).

Almost surely, 2^45728293 is an apocalyptic number.

It is an amenable number.

45728293 is a deficient number, since it is larger than the sum of its proper divisors (3517575).

45728293 is a wasteful number, since it uses less digits than its factorization.

45728293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517574.

The product of its digits is 120960, while the sum is 40.

The square root of 45728293 is about 6762.2698112394. The cubic root of 45728293 is about 357.5979303657.

The spelling of 45728293 in words is "forty-five million, seven hundred twenty-eight thousand, two hundred ninety-three".