40743738 has 48 divisors (see below), whose sum is σ = 101477376. Its totient is φ = 11573280.

The previous prime is 40743721. The next prime is 40743739. The reversal of 40743738 is 83734704.

It is not an unprimeable number, because it can be changed into a prime (40743739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23220 + ... + 24912.

It is an arithmetic number, because the mean of its divisors is an integer number (2114112).

Almost surely, 2^40743738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40743738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50738688).

40743738 is an abundant number, since it is smaller than the sum of its proper divisors (60733638).

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

40743738 is a wasteful number, since it uses less digits than its factorization.

40743738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899 (or 1896 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 40743738 is about 6383.0821708639. The cubic root of 40743738 is about 344.1018098241.

The spelling of 40743738 in words is "forty million, seven hundred forty-three thousand, seven hundred thirty-eight".