138262715 has 16 divisors (see below), whose sum is σ = 175113120. Its totient is φ = 104509440.

The previous prime is 138262711. The next prime is 138262727. The reversal of 138262715 is 517262831.

It is a happy number.

It is not a de Polignac number, because 138262715 - 2² = 138262711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138262711) 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, 38267 + ... + 41723.

It is an arithmetic number, because the mean of its divisors is an integer number (10944570).

Almost surely, 2^138262715 is an apocalyptic number.

138262715 is a deficient number, since it is larger than the sum of its proper divisors (36850405).

138262715 is a wasteful number, since it uses less digits than its factorization.

138262715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902.

The product of its digits is 20160, while the sum is 35.

The square root of 138262715 is about 11758.5167006728. The cubic root of 138262715 is about 517.0926446492.

The spelling of 138262715 in words is "one hundred thirty-eight million, two hundred sixty-two thousand, seven hundred fifteen".