45399240 has 96 divisors (see below), whose sum is σ = 153990720. Its totient is φ = 11577984.

The previous prime is 45399223. The next prime is 45399247. The reversal of 45399240 is 4299354.

45399240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×45399240² = 4122181985155200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 45399195 and 45399204.

It is not an unprimeable number, because it can be changed into a prime (45399247) by changing a digit.

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, 5539 + ... + 11021.

It is an arithmetic number, because the mean of its divisors is an integer number (1604070).

Almost surely, 2^45399240 is an apocalyptic number.

45399240 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 45399240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76995360).

45399240 is an abundant number, since it is smaller than the sum of its proper divisors (108591480).

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

45399240 is a wasteful number, since it uses less digits than its factorization.

45399240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523 (or 5516 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 45399240 is about 6737.8958139763. The cubic root of 45399240 is about 356.7381268099.

The spelling of 45399240 in words is "forty-five million, three hundred ninety-nine thousand, two hundred forty".