38749742 has 16 divisors (see below), whose sum is σ = 60328800. Its totient is φ = 18644640.

The previous prime is 38749723. The next prime is 38749757. The reversal of 38749742 is 24794783.

38749742 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 = 38749693 and 38749702.

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, 19892 + ... + 21752.

It is an arithmetic number, because the mean of its divisors is an integer number (3770550).

Almost surely, 2^38749742 is an apocalyptic number.

38749742 is a deficient number, since it is larger than the sum of its proper divisors (21579058).

38749742 is a wasteful number, since it uses less digits than its factorization.

38749742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251.

The product of its digits is 338688, while the sum is 44.

The square root of 38749742 is about 6224.9290759012. The cubic root of 38749742 is about 338.3942215852.

The spelling of 38749742 in words is "thirty-eight million, seven hundred forty-nine thousand, seven hundred forty-two".