138448267 has 16 divisors (see below), whose sum is σ = 144698400. Its totient is φ = 132371200.

The previous prime is 138448259. The next prime is 138448313. The reversal of 138448267 is 762844831.

It is a cyclic number.

It is not a de Polignac number, because 138448267 - 2³ = 138448259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138448207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800193 + ... + 800365.

It is an arithmetic number, because the mean of its divisors is an integer number (9043650).

Almost surely, 2^138448267 is an apocalyptic number.

138448267 is a deficient number, since it is larger than the sum of its proper divisors (6250133).

138448267 is a wasteful number, since it uses less digits than its factorization.

138448267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494.

The product of its digits is 258048, while the sum is 43.

The square root of 138448267 is about 11766.4041660993. The cubic root of 138448267 is about 517.3238583090.

The spelling of 138448267 in words is "one hundred thirty-eight million, four hundred forty-eight thousand, two hundred sixty-seven".