38347638 has 16 divisors (see below), whose sum is σ = 87651840. Its totient is φ = 10956456.

The previous prime is 38347613. The next prime is 38347649. The reversal of 38347638 is 83674383.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 913039 = 38347638 / (3 + 8 + 3 + 4 + 7 + 6 + 3 + 8).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38347638.

It is a congruent number.

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, 456478 + ... + 456561.

It is an arithmetic number, because the mean of its divisors is an integer number (5478240).

Almost surely, 2^38347638 is an apocalyptic number.

38347638 is an abundant number, since it is smaller than the sum of its proper divisors (49304202).

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

38347638 is a wasteful number, since it uses less digits than its factorization.

38347638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913051.

The product of its digits is 290304, while the sum is 42.

The square root of 38347638 is about 6192.5469719656. The cubic root of 38347638 is about 337.2196497656.

The spelling of 38347638 in words is "thirty-eight million, three hundred forty-seven thousand, six hundred thirty-eight".