45728330 has 8 divisors (see below), whose sum is σ = 82311012. Its totient is φ = 18291328.

The previous prime is 45728327. The next prime is 45728339. The reversal of 45728330 is 3382754.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43546801 + 2181529 = 6599^2 + 1477^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45728339) 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, 2286407 + ... + 2286426.

Almost surely, 2^45728330 is an apocalyptic number.

45728330 is a deficient number, since it is larger than the sum of its proper divisors (36582682).

45728330 is a wasteful number, since it uses less digits than its factorization.

45728330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572840.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 45728330 is about 6762.2725470067. The cubic root of 45728330 is about 357.5980268131.

The spelling of 45728330 in words is "forty-five million, seven hundred twenty-eight thousand, three hundred thirty".