45412440 has 128 divisors (see below), whose sum is σ = 146266560. Its totient is φ = 11239424.

The previous prime is 45412421. The next prime is 45412447. The reversal of 45412440 is 4421454.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 45412440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45412447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230422 + ... + 230618.

Almost surely, 2^45412440 is an apocalyptic number.

45412440 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 45412440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73133280).

45412440 is an abundant number, since it is smaller than the sum of its proper divisors (100854120).

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

45412440 is a wasteful number, since it uses less digits than its factorization.

45412440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 45412440 is about 6738.8752770770. The cubic root of 45412440 is about 356.7726977775.

Adding to 45412440 its reverse (4421454), we get a palindrome (49833894).

The spelling of 45412440 in words is "forty-five million, four hundred twelve thousand, four hundred forty".