138170344 has 24 divisors (see below), whose sum is σ = 280533510. Its totient is φ = 63770304.

The previous prime is 138170341. The next prime is 138170353. The reversal of 138170344 is 443071831.

138170344 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 90973444 + 47196900 = 9538^2 + 6870^2 .

It is a super-2 number, since 2×138170344² = 38182087922156672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138170341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49747 + ... + 52450.

Almost surely, 2^138170344 is an apocalyptic number.

It is an amenable number.

138170344 is an abundant number, since it is smaller than the sum of its proper divisors (142363166).

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

138170344 is a wasteful number, since it uses less digits than its factorization.

138170344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102229 (or 102212 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 138170344 is about 11754.5882105670. The cubic root of 138170344 is about 516.9774653557.

The spelling of 138170344 in words is "one hundred thirty-eight million, one hundred seventy thousand, three hundred forty-four".