45232240 has 80 divisors (see below), whose sum is σ = 113028480. Its totient is φ = 16773120.

The previous prime is 45232211. The next prime is 45232273. The reversal of 45232240 is 4223254.

It is a tau number, because it is divible by the number of its divisors (80).

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, 107230 + ... + 107650.

It is an arithmetic number, because the mean of its divisors is an integer number (1412856).

Almost surely, 2^45232240 is an apocalyptic number.

45232240 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 45232240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56514240).

45232240 is an abundant number, since it is smaller than the sum of its proper divisors (67796240).

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

45232240 is a wasteful number, since it uses less digits than its factorization.

45232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 45232240 is about 6725.4918035784. The cubic root of 45232240 is about 356.3001718606.

Adding to 45232240 its reverse (4223254), we get a palindrome (49455494).

The spelling of 45232240 in words is "forty-five million, two hundred thirty-two thousand, two hundred forty".