744427440 has 60 divisors (see below), whose sum is σ = 2500037904. Its totient is φ = 198513792.

The previous prime is 744427423. The next prime is 744427451. The reversal of 744427440 is 44724447.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 744427395 and 744427404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516244 + ... + 517683.

Almost surely, 2^744427440 is an apocalyptic number.

It is an amenable number.

744427440 is an abundant number, since it is smaller than the sum of its proper divisors (1755610464).

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

744427440 is a wasteful number, since it uses less digits than its factorization.

744427440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033946 (or 1033937 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 36.

The square root of 744427440 is about 27284.1976242660. The cubic root of 744427440 is about 906.3044749498.

The spelling of 744427440 in words is "seven hundred forty-four million, four hundred twenty-seven thousand, four hundred forty".