45442780 has 24 divisors (see below), whose sum is σ = 95559408. Its totient is φ = 18152448.

The previous prime is 45442753. The next prime is 45442781. The reversal of 45442780 is 8724454.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45442781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23407 + ... + 25273.

It is an arithmetic number, because the mean of its divisors is an integer number (3981642).

Almost surely, 2^45442780 is an apocalyptic number.

It is an amenable number.

45442780 is an abundant number, since it is smaller than the sum of its proper divisors (50116628).

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

45442780 is a wasteful number, since it uses less digits than its factorization.

45442780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093 (or 3091 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 45442780 is about 6741.1260187004. The cubic root of 45442780 is about 356.8521332357.

It can be divided in two parts, 454 and 42780, that added together give a palindrome (43234).

The spelling of 45442780 in words is "forty-five million, four hundred forty-two thousand, seven hundred eighty".