45009378 has 32 divisors (see below), whose sum is σ = 100552320. Its totient is φ = 14923440.

The previous prime is 45009329. The next prime is 45009379. The reversal of 45009378 is 87390054.

It is not an unprimeable number, because it can be changed into a prime (45009379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8523 + ... + 12753.

It is an arithmetic number, because the mean of its divisors is an integer number (3142260).

Almost surely, 2^45009378 is an apocalyptic number.

45009378 is an abundant number, since it is smaller than the sum of its proper divisors (55542942).

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

45009378 is a wasteful number, since it uses less digits than its factorization.

45009378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439 (or 4433 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 45009378 is about 6708.9028909353. The cubic root of 45009378 is about 355.7140372849.

The spelling of 45009378 in words is "forty-five million, nine thousand, three hundred seventy-eight".