45727878 has 24 divisors (see below), whose sum is σ = 106387992. Its totient is φ = 13065024.

The previous prime is 45727873. The next prime is 45727907. The reversal of 45727878 is 87872754.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45727873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77475 + ... + 78062.

It is an arithmetic number, because the mean of its divisors is an integer number (4432833).

Almost surely, 2^45727878 is an apocalyptic number.

45727878 is an abundant number, since it is smaller than the sum of its proper divisors (60660114).

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

45727878 is a wasteful number, since it uses less digits than its factorization.

45727878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155556 (or 155549 counting only the distinct ones).

The product of its digits is 878080, while the sum is 48.

The square root of 45727878 is about 6762.2391262066. The cubic root of 45727878 is about 357.5968485877.

The spelling of 45727878 in words is "forty-five million, seven hundred twenty-seven thousand, eight hundred seventy-eight".