45019044 has 144 divisors (see below), whose sum is σ = 139426560. Its totient is φ = 12519360.

The previous prime is 45019021. The next prime is 45019057. The reversal of 45019044 is 44091054.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 45018999 and 45019017.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 248634 + ... + 248814.

It is an arithmetic number, because the mean of its divisors is an integer number (968240).

Almost surely, 2^45019044 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 45019044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69713280).

45019044 is an abundant number, since it is smaller than the sum of its proper divisors (94407516).

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

45019044 is a wasteful number, since it uses less digits than its factorization.

45019044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 45019044 is about 6709.6232383048. The cubic root of 45019044 is about 355.7394992807.

The spelling of 45019044 in words is "forty-five million, nineteen thousand, forty-four".