38817642 has 16 divisors (see below), whose sum is σ = 80140032. Its totient is φ = 12521760.

The previous prime is 38817619. The next prime is 38817659. The reversal of 38817642 is 24671883.

It is a self number, because there is not a number n which added to its sum of digits gives 38817642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104163 + ... + 104534.

It is an arithmetic number, because the mean of its divisors is an integer number (5008752).

Almost surely, 2^38817642 is an apocalyptic number.

38817642 is an abundant number, since it is smaller than the sum of its proper divisors (41322390).

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

38817642 is a wasteful number, since it uses less digits than its factorization.

38817642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208733.

The product of its digits is 64512, while the sum is 39.

The square root of 38817642 is about 6230.3805662255. The cubic root of 38817642 is about 338.5917589011.

The spelling of 38817642 in words is "thirty-eight million, eight hundred seventeen thousand, six hundred forty-two".