45689440 has 24 divisors (see below), whose sum is σ = 107941680. Its totient is φ = 18275712.

The previous prime is 45689437. The next prime is 45689447. The reversal of 45689440 is 4498654.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 45689393 and 45689402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45689447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142620 + ... + 142939.

It is an arithmetic number, because the mean of its divisors is an integer number (4497570).

Almost surely, 2^45689440 is an apocalyptic number.

45689440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45689440 is an abundant number, since it is smaller than the sum of its proper divisors (62252240).

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

45689440 is a wasteful number, since it uses less digits than its factorization.

45689440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285574 (or 285566 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 45689440 is about 6759.3964227585. The cubic root of 45689440 is about 357.4966240899.

The spelling of 45689440 in words is "forty-five million, six hundred eighty-nine thousand, four hundred forty".