38117830 has 8 divisors (see below), whose sum is σ = 68612112. Its totient is φ = 15247128.

The previous prime is 38117813. The next prime is 38117837. The reversal of 38117830 is 3871183.

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

It is a super-4 number, since 4×38117830⁴ (a number of 31 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38117792 and 38117801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38117837) by changing a digit.

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, 1905882 + ... + 1905901.

It is an arithmetic number, because the mean of its divisors is an integer number (8576514).

Almost surely, 2^38117830 is an apocalyptic number.

38117830 is a deficient number, since it is larger than the sum of its proper divisors (30494282).

38117830 is a wasteful number, since it uses less digits than its factorization.

38117830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3811790.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 38117830 is about 6173.9638806848. The cubic root of 38117830 is about 336.5446747286.

The spelling of 38117830 in words is "thirty-eight million, one hundred seventeen thousand, eight hundred thirty".