45019380 has 96 divisors (see below), whose sum is σ = 148006656. Its totient is φ = 10008576.

The previous prime is 45019367. The next prime is 45019391. The reversal of 45019380 is 8391054.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14092 + ... + 16988.

It is an arithmetic number, because the mean of its divisors is an integer number (1541736).

Almost surely, 2^45019380 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 45019380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74003328).

45019380 is an abundant number, since it is smaller than the sum of its proper divisors (102987276).

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

45019380 is a wasteful number, since it uses less digits than its factorization.

45019380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953 (or 2951 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 45019380 is about 6709.6482769218. The cubic root of 45019380 is about 355.7403843001.

The spelling of 45019380 in words is "forty-five million, nineteen thousand, three hundred eighty".