45102780 has 72 divisors (see below), whose sum is σ = 137958912. Its totient is φ = 11926656.

The previous prime is 45102779. The next prime is 45102791. The reversal of 45102780 is 8720154.

45102780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 21874 + ... + 23846.

It is an arithmetic number, because the mean of its divisors is an integer number (1916096).

Almost surely, 2^45102780 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 45102780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68979456).

45102780 is an abundant number, since it is smaller than the sum of its proper divisors (92856132).

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

45102780 is a wasteful number, since it uses less digits than its factorization.

45102780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 45102780 is about 6715.8603320796. The cubic root of 45102780 is about 355.9599226861.

The spelling of 45102780 in words is "forty-five million, one hundred two thousand, seven hundred eighty".