38881642 has 8 divisors (see below), whose sum is σ = 58573476. Its totient is φ = 19357152.

The previous prime is 38881639. The next prime is 38881651. The reversal of 38881642 is 24618883.

It can be written as a sum of positive squares in 2 ways, for example, as 31036041 + 7845601 = 5571^2 + 2801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 38881595 and 38881604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41253 + ... + 42184.

Almost surely, 2^38881642 is an apocalyptic number.

38881642 is a deficient number, since it is larger than the sum of its proper divisors (19691834).

38881642 is a wasteful number, since it uses less digits than its factorization.

38881642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83672.

The product of its digits is 73728, while the sum is 40.

The square root of 38881642 is about 6235.5145737942. The cubic root of 38881642 is about 338.7777394077. Note that the first 4 decimals are identical.

The spelling of 38881642 in words is "thirty-eight million, eight hundred eighty-one thousand, six hundred forty-two".