272670138 has 80 divisors (see below), whose sum is σ = 673507296. Its totient is φ = 81920160.

The previous prime is 272670137. The next prime is 272670161. The reversal of 272670138 is 831076272.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (272670137) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 89053 + ... + 92063.

Almost surely, 2^272670138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 272670138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336753648).

272670138 is an abundant number, since it is smaller than the sum of its proper divisors (400837158).

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

272670138 is a wasteful number, since it uses less digits than its factorization.

272670138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081 (or 3072 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 272670138 is about 16512.7265465156. The cubic root of 272670138 is about 648.4540285133.

The spelling of 272670138 in words is "two hundred seventy-two million, six hundred seventy thousand, one hundred thirty-eight".