138774234 has 8 divisors (see below), whose sum is σ = 277548480. Its totient is φ = 46258076.

The previous prime is 138774227. The next prime is 138774263. The reversal of 138774234 is 432477831.

It is a sphenic number, since it is the product of 3 distinct primes.

138774234 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 138774192 and 138774201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11564514 + ... + 11564525.

It is an arithmetic number, because the mean of its divisors is an integer number (34693560).

Almost surely, 2^138774234 is an apocalyptic number.

138774234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138774234 is a wasteful number, since it uses less digits than its factorization.

138774234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23129044.

The product of its digits is 112896, while the sum is 39.

The square root of 138774234 is about 11780.2476204874. The cubic root of 138774234 is about 517.7295413356.

The spelling of 138774234 in words is "one hundred thirty-eight million, seven hundred seventy-four thousand, two hundred thirty-four".