38348781 has 8 divisors (see below), whose sum is σ = 51418080. Its totient is φ = 25422672.

The previous prime is 38348773. The next prime is 38348831. The reversal of 38348781 is 18784383.

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

It is not a de Polignac number, because 38348781 - 2³ = 38348773 is a prime.

It is a super-2 number, since 2×38348781² = 2941258008371922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38348741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35170 + ... + 36243.

It is an arithmetic number, because the mean of its divisors is an integer number (6427260).

Almost surely, 2^38348781 is an apocalyptic number.

It is an amenable number.

38348781 is a deficient number, since it is larger than the sum of its proper divisors (13069299).

38348781 is a wasteful number, since it uses less digits than its factorization.

38348781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71595.

The product of its digits is 129024, while the sum is 42.

The square root of 38348781 is about 6192.6392596372. The cubic root of 38348781 is about 337.2230001521.

The spelling of 38348781 in words is "thirty-eight million, three hundred forty-eight thousand, seven hundred eighty-one".