45442840 has 32 divisors (see below), whose sum is σ = 103692960. Its totient is φ = 17920000.

The previous prime is 45442811. The next prime is 45442847. The reversal of 45442840 is 4824454.

45442840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45442847) 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 7 ways as a sum of consecutive naturals, for example, 5161 + ... + 10840.

It is an arithmetic number, because the mean of its divisors is an integer number (3240405).

Almost surely, 2^45442840 is an apocalyptic number.

45442840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45442840 is an abundant number, since it is smaller than the sum of its proper divisors (58250120).

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

45442840 is a wasteful number, since it uses less digits than its factorization.

45442840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16083 (or 16079 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 45442840 is about 6741.1304689941. The cubic root of 45442840 is about 356.8522902912.

The spelling of 45442840 in words is "forty-five million, four hundred forty-two thousand, eight hundred forty".