138207882 has 16 divisors (see below), whose sum is σ = 278527392. Its totient is φ = 45717360.

The previous prime is 138207859. The next prime is 138207887. The reversal of 138207882 is 288702831.

It is a self number, because there is not a number n which added to its sum of digits gives 138207882.

It is not an unprimeable number, because it can be changed into a prime (138207887) 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, 87133 + ... + 88704.

It is an arithmetic number, because the mean of its divisors is an integer number (17407962).

Almost surely, 2^138207882 is an apocalyptic number.

138207882 is an abundant number, since it is smaller than the sum of its proper divisors (140319510).

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

138207882 is a wasteful number, since it uses less digits than its factorization.

138207882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175973.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 138207882 is about 11756.1848403298. The cubic root of 138207882 is about 517.0242784474.

The spelling of 138207882 in words is "one hundred thirty-eight million, two hundred seven thousand, eight hundred eighty-two".