38109870 has 48 divisors (see below), whose sum is σ = 100779120. Its totient is φ = 9988992.

The previous prime is 38109859. The next prime is 38109871. The reversal of 38109870 is 7890183.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38109871) 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 23 ways as a sum of consecutive naturals, for example, 1722 + ... + 8898.

It is an arithmetic number, because the mean of its divisors is an integer number (2099565).

Almost surely, 2^38109870 is an apocalyptic number.

38109870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38109870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50389560).

38109870 is an abundant number, since it is smaller than the sum of its proper divisors (62669250).

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

38109870 is a wasteful number, since it uses less digits than its factorization.

38109870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7249 (or 7246 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 38109870 is about 6173.3192044475. The cubic root of 38109870 is about 336.5212466539.

The spelling of 38109870 in words is "thirty-eight million, one hundred nine thousand, eight hundred seventy".