38549390 has 24 divisors (see below), whose sum is σ = 76272840. Its totient is φ = 14017520.

The previous prime is 38549369. The next prime is 38549431. The reversal of 38549390 is 9394583.

38549390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11 ways as a sum of consecutive naturals, for example, 14720 + ... + 17139.

It is an arithmetic number, because the mean of its divisors is an integer number (3178035).

Almost surely, 2^38549390 is an apocalyptic number.

38549390 is a deficient number, since it is larger than the sum of its proper divisors (37723450).

38549390 is a wasteful number, since it uses less digits than its factorization.

38549390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31888 (or 31877 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 38549390 is about 6208.8155070029. The cubic root of 38549390 is about 337.8100014063.

It can be divided in two parts, 385493 and 90, that added together give a palindrome (385583).

The spelling of 38549390 in words is "thirty-eight million, five hundred forty-nine thousand, three hundred ninety".