40003744 has 24 divisors (see below), whose sum is σ = 85917888. Its totient is φ = 18183360.

The previous prime is 40003723. The next prime is 40003753. The reversal of 40003744 is 44730004.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56472 + ... + 57175.

It is an arithmetic number, because the mean of its divisors is an integer number (3579912).

Almost surely, 2^40003744 is an apocalyptic number.

40003744 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40003744 is an abundant number, since it is smaller than the sum of its proper divisors (45914144).

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

40003744 is a wasteful number, since it uses less digits than its factorization.

40003744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113668 (or 113660 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 40003744 is about 6324.8513025999. The cubic root of 40003744 is about 342.0058592524.

Adding to 40003744 its reverse (44730004), we get a palindrome (84733748).

It can be divided in two parts, 4000 and 3744, that added together give a square (7744 = 88²).

The spelling of 40003744 in words is "forty million, three thousand, seven hundred forty-four".