45149780 has 48 divisors (see below), whose sum is σ = 102716544. Its totient is φ = 16571520.

The previous prime is 45149779. The next prime is 45149791. The reversal of 45149780 is 8794154.

45149780 is digitally balanced in base 2 and base 9, because in such bases it contains all the possibile digits an equal number of times.

45149780 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 54449 + ... + 55271.

It is an arithmetic number, because the mean of its divisors is an integer number (2139928).

Almost surely, 2^45149780 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 45149780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51358272).

45149780 is an abundant number, since it is smaller than the sum of its proper divisors (57566764).

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

45149780 is a wasteful number, since it uses less digits than its factorization.

45149780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 45149780 is about 6719.3586003427. The cubic root of 45149780 is about 356.0835241466.

The spelling of 45149780 in words is "forty-five million, one hundred forty-nine thousand, seven hundred eighty".