138219696 has 100 divisors (see below), whose sum is σ = 417531312. Its totient is φ = 44060544.

The previous prime is 138219691. The next prime is 138219703. The reversal of 138219696 is 696912831.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (138219691) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27490 + ... + 32126.

Almost surely, 2^138219696 is an apocalyptic number.

138219696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138219696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208765656).

138219696 is an abundant number, since it is smaller than the sum of its proper divisors (279311616).

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

138219696 is a wasteful number, since it uses less digits than its factorization.

138219696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680 (or 4665 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 138219696 is about 11756.6872885180. The cubic root of 138219696 is about 517.0390097606.

The spelling of 138219696 in words is "one hundred thirty-eight million, two hundred nineteen thousand, six hundred ninety-six".