45047784 has 64 divisors (see below), whose sum is σ = 119347200. Its totient is φ = 14129856.

The previous prime is 45047767. The next prime is 45047791. The reversal of 45047784 is 48774054.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101467 + ... + 101909.

It is an arithmetic number, because the mean of its divisors is an integer number (1864800).

Almost surely, 2^45047784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45047784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59673600).

45047784 is an abundant number, since it is smaller than the sum of its proper divisors (74299416).

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

45047784 is a wasteful number, since it uses less digits than its factorization.

45047784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 39.

The square root of 45047784 is about 6711.7645965871. The cubic root of 45047784 is about 355.8151841275.

The spelling of 45047784 in words is "forty-five million, forty-seven thousand, seven hundred eighty-four".