138020582 has 16 divisors (see below), whose sum is σ = 243002400. Its totient is φ = 57552768.

The previous prime is 138020581. The next prime is 138020651. The reversal of 138020582 is 285020831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138020581) 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, 132707 + ... + 133742.

It is an arithmetic number, because the mean of its divisors is an integer number (15187650).

Almost surely, 2^138020582 is an apocalyptic number.

138020582 is a deficient number, since it is larger than the sum of its proper divisors (104981818).

138020582 is a wasteful number, since it uses less digits than its factorization.

138020582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266495.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 138020582 is about 11748.2161199052. The cubic root of 138020582 is about 516.7906149150.

The spelling of 138020582 in words is "one hundred thirty-eight million, twenty thousand, five hundred eighty-two".