45003640 has 64 divisors (see below), whose sum is σ = 115292160. Its totient is φ = 15649920.

The previous prime is 45003631. The next prime is 45003683. The reversal of 45003640 is 4630054.

It is a super-2 number, since 2×45003640² = 4050655226499200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7897 + ... + 12343.

It is an arithmetic number, because the mean of its divisors is an integer number (1801440).

Almost surely, 2^45003640 is an apocalyptic number.

45003640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45003640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57646080).

45003640 is an abundant number, since it is smaller than the sum of its proper divisors (70288520).

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

45003640 is a wasteful number, since it uses less digits than its factorization.

45003640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492 (or 4488 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 45003640 is about 6708.4752365944. The cubic root of 45003640 is about 355.6989206287.

Adding to 45003640 its reverse (4630054), we get a palindrome (49633694).

The spelling of 45003640 in words is "forty-five million, three thousand, six hundred forty".