138083274 has 72 divisors (see below), whose sum is σ = 355537728. Its totient is φ = 38601360.

The previous prime is 138083263. The next prime is 138083327. The reversal of 138083274 is 472380831.

138083274 is a `hidden beast` number, since 1 + 380 + 8 + 3 + 274 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39789 + ... + 43119.

It is an arithmetic number, because the mean of its divisors is an integer number (4938024).

Almost surely, 2^138083274 is an apocalyptic number.

138083274 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 138083274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177768864).

138083274 is an abundant number, since it is smaller than the sum of its proper divisors (217454454).

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

138083274 is a wasteful number, since it uses less digits than its factorization.

138083274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400 (or 3390 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 138083274 is about 11750.8839667491. The cubic root of 138083274 is about 516.8688489789.

The spelling of 138083274 in words is "one hundred thirty-eight million, eighty-three thousand, two hundred seventy-four".