45840728 has 16 divisors (see below), whose sum is σ = 86230680. Its totient is φ = 22845888.

The previous prime is 45840727. The next prime is 45840757. The reversal of 45840728 is 82704854.

It is a junction number, because it is equal to n+sod(n) for n = 45840691 and 45840700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45840727) 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, 6650 + ... + 11657.

Almost surely, 2^45840728 is an apocalyptic number.

It is an amenable number.

45840728 is a deficient number, since it is larger than the sum of its proper divisors (40389952).

45840728 is a wasteful number, since it uses less digits than its factorization.

45840728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18626 (or 18622 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 45840728 is about 6770.5781141643. The cubic root of 45840728 is about 357.8907732488.

The spelling of 45840728 in words is "forty-five million, eight hundred forty thousand, seven hundred twenty-eight".