45223040 has 64 divisors (see below), whose sum is σ = 113832000. Its totient is φ = 17132544.

The previous prime is 45223039. The next prime is 45223063. The reversal of 45223040 is 4032254.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10301 + ... + 14019.

It is an arithmetic number, because the mean of its divisors is an integer number (1778625).

Almost surely, 2^45223040 is an apocalyptic number.

45223040 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 45223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56916000).

45223040 is an abundant number, since it is smaller than the sum of its proper divisors (68608960).

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

45223040 is a wasteful number, since it uses less digits than its factorization.

45223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757 (or 3745 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 45223040 is about 6724.8078039450. The cubic root of 45223040 is about 356.2760136950.

Adding to 45223040 its reverse (4032254), we get a palindrome (49255294).

The spelling of 45223040 in words is "forty-five million, two hundred twenty-three thousand, forty".