45840028 has 12 divisors (see below), whose sum is σ = 86390920. Its totient is φ = 21156912.

The previous prime is 45840019. The next prime is 45840029. The reversal of 45840028 is 82004854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45840029) 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, 440718 + ... + 440821.

Almost surely, 2^45840028 is an apocalyptic number.

It is an amenable number.

45840028 is a deficient number, since it is larger than the sum of its proper divisors (40550892).

45840028 is a wasteful number, since it uses less digits than its factorization.

45840028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881556 (or 881554 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 45840028 is about 6770.5264197107. The cubic root of 45840028 is about 357.8889515440. Note that the first 3 decimals are identical.

The spelling of 45840028 in words is "forty-five million, eight hundred forty thousand, twenty-eight".