138462534 has 60 divisors (see below), whose sum is σ = 360933804. Its totient is φ = 39558456.

The previous prime is 138462479. The next prime is 138462563. The reversal of 138462534 is 435264831.

138462534 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 784 + ... + 16659.

Almost surely, 2^138462534 is an apocalyptic number.

138462534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 138462534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180466902).

138462534 is an abundant number, since it is smaller than the sum of its proper divisors (222471270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138462534 is a wasteful number, since it uses less digits than its factorization.

138462534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17471 (or 17455 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 138462534 is about 11767.0104104654. The cubic root of 138462534 is about 517.3416276562.

The spelling of 138462534 in words is "one hundred thirty-eight million, four hundred sixty-two thousand, five hundred thirty-four".