45487944 has 48 divisors (see below), whose sum is σ = 125228220. Its totient is φ = 14912640.

The previous prime is 45487927. The next prime is 45487991. The reversal of 45487944 is 44978454.

It can be written as a sum of positive squares in 2 ways, for example, as 41447844 + 4040100 = 6438^2 + 2010^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 45487944.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 787 + ... + 9570.

Almost surely, 2^45487944 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 45487944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62614110).

45487944 is an abundant number, since it is smaller than the sum of its proper divisors (79740276).

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

45487944 is a wasteful number, since it uses less digits than its factorization.

45487944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10430 (or 10423 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 45487944 is about 6744.4750722351. The cubic root of 45487944 is about 356.9703150705.

The spelling of 45487944 in words is "forty-five million, four hundred eighty-seven thousand, nine hundred forty-four".