138716026 has 16 divisors (see below), whose sum is σ = 210846240. Its totient is φ = 68438800.

The previous prime is 138716009. The next prime is 138716029. The reversal of 138716026 is 620617831.

It is a junction number, because it is equal to n+sod(n) for n = 138715982 and 138716000.

It is not an unprimeable number, because it can be changed into a prime (138716029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69105 + ... + 71083.

It is an arithmetic number, because the mean of its divisors is an integer number (13177890).

Almost surely, 2^138716026 is an apocalyptic number.

138716026 is a deficient number, since it is larger than the sum of its proper divisors (72130214).

138716026 is a wasteful number, since it uses less digits than its factorization.

138716026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 138716026 is about 11777.7767851153. The cubic root of 138716026 is about 517.6571450539.

The spelling of 138716026 in words is "one hundred thirty-eight million, seven hundred sixteen thousand, twenty-six".