45728394 has 8 divisors (see below), whose sum is σ = 91456800. Its totient is φ = 15242796.

The previous prime is 45728381. The next prime is 45728399. The reversal of 45728394 is 49382754.

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

45728394 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (45728399) 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, 3810694 + ... + 3810705.

It is an arithmetic number, because the mean of its divisors is an integer number (11432100).

Almost surely, 2^45728394 is an apocalyptic number.

45728394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45728394 is a wasteful number, since it uses less digits than its factorization.

45728394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7621404.

The product of its digits is 241920, while the sum is 42.

The square root of 45728394 is about 6762.2772791420. The cubic root of 45728394 is about 357.5981936408.

The spelling of 45728394 in words is "forty-five million, seven hundred twenty-eight thousand, three hundred ninety-four".