38442740 has 24 divisors (see below), whose sum is σ = 92262912. Its totient is φ = 13180320.

The previous prime is 38442739. The next prime is 38442751. The reversal of 38442740 is 4724483.

38442740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 38442697 and 38442706.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 137156 + ... + 137435.

It is an arithmetic number, because the mean of its divisors is an integer number (3844288).

Almost surely, 2^38442740 is an apocalyptic number.

It is an amenable number.

38442740 is an abundant number, since it is smaller than the sum of its proper divisors (53820172).

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

38442740 is a wasteful number, since it uses less digits than its factorization.

38442740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274607 (or 274605 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 38442740 is about 6200.2209638044. The cubic root of 38442740 is about 337.4981874617.

The spelling of 38442740 in words is "thirty-eight million, four hundred forty-two thousand, seven hundred forty".