45780138 has 12 divisors (see below), whose sum is σ = 99190338. Its totient is φ = 15260040.

The previous prime is 45780131. The next prime is 45780197. The reversal of 45780138 is 83108754.

45780138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32798529 + 12981609 = 5727^2 + 3603^2 .

It is not an unprimeable number, because it can be changed into a prime (45780131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1271653 + ... + 1271688.

Almost surely, 2^45780138 is an apocalyptic number.

45780138 is an abundant number, since it is smaller than the sum of its proper divisors (53410200).

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

45780138 is a wasteful number, since it uses less digits than its factorization.

45780138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543349 (or 2543346 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 45780138 is about 6766.1021275177. The cubic root of 45780138 is about 357.7330229701.

The spelling of 45780138 in words is "forty-five million, seven hundred eighty thousand, one hundred thirty-eight".