38443740 has 48 divisors (see below), whose sum is σ = 110558112. Its totient is φ = 9974016.

The previous prime is 38443739. The next prime is 38443747. The reversal of 38443740 is 4734483.

38443740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×38443740² = 2955842290375200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38443747) 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 15 ways as a sum of consecutive naturals, for example, 6439 + ... + 10878.

It is an arithmetic number, because the mean of its divisors is an integer number (2303294).

Almost surely, 2^38443740 is an apocalyptic number.

38443740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38443740 is an abundant number, since it is smaller than the sum of its proper divisors (72114372).

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

38443740 is a wasteful number, since it uses less digits than its factorization.

38443740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17366 (or 17364 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 38443740 is about 6200.3016055673. The cubic root of 38443740 is about 337.5011138509.

The spelling of 38443740 in words is "thirty-eight million, four hundred forty-three thousand, seven hundred forty".