138046436 has 24 divisors (see below), whose sum is σ = 267261120. Its totient is φ = 61863200.

The previous prime is 138046427. The next prime is 138046439. The reversal of 138046436 is 634640831.

138046436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 138046396 and 138046405.

It is not an unprimeable number, because it can be changed into a prime (138046439) 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, 18971 + ... + 25218.

It is an arithmetic number, because the mean of its divisors is an integer number (11135880).

Almost surely, 2^138046436 is an apocalyptic number.

It is an amenable number.

138046436 is a deficient number, since it is larger than the sum of its proper divisors (129214684).

138046436 is a wasteful number, since it uses less digits than its factorization.

138046436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44275 (or 44273 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 138046436 is about 11749.3164056468. The cubic root of 138046436 is about 516.8228812871.

The spelling of 138046436 in words is "one hundred thirty-eight million, forty-six thousand, four hundred thirty-six".