38138860 has 24 divisors (see below), whose sum is σ = 82257840. Its totient is φ = 14842944.

The previous prime is 38138851. The next prime is 38138869. The reversal of 38138860 is 6883183.

It is an interprime number because it is at equal distance from previous prime (38138851) and next prime (38138869).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (38138869) 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, 25030 + ... + 26509.

It is an arithmetic number, because the mean of its divisors is an integer number (3427410).

Almost surely, 2^38138860 is an apocalyptic number.

It is an amenable number.

38138860 is an abundant number, since it is smaller than the sum of its proper divisors (44118980).

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

38138860 is a wasteful number, since it uses less digits than its factorization.

38138860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51585 (or 51583 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 38138860 is about 6175.6667656213. Note that the first 3 decimals coincide. The cubic root of 38138860 is about 336.6065550729.

The spelling of 38138860 in words is "thirty-eight million, one hundred thirty-eight thousand, eight hundred sixty".