138830076 has 216 divisors, whose sum is σ = 458945760. Its totient is φ = 34594560.

The previous prime is 138830053. The next prime is 138830099. The reversal of 138830076 is 670038831.

It is an interprime number because it is at equal distance from previous prime (138830053) and next prime (138830099).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 138830076.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 884190 + ... + 884346.

Almost surely, 2^138830076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138830076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229472880).

138830076 is an abundant number, since it is smaller than the sum of its proper divisors (320115684).

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

138830076 is a wasteful number, since it uses less digits than its factorization.

138830076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 138830076 is about 11782.6175360147. The cubic root of 138830076 is about 517.7989758773.

The spelling of 138830076 in words is "one hundred thirty-eight million, eight hundred thirty thousand, seventy-six".