138733782 has 64 divisors (see below), whose sum is σ = 320544000. Its totient is φ = 39588480.

The previous prime is 138733741. The next prime is 138733849. The reversal of 138733782 is 287337831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397344 + ... + 397692.

It is an arithmetic number, because the mean of its divisors is an integer number (5008500).

Almost surely, 2^138733782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138733782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160272000).

138733782 is an abundant number, since it is smaller than the sum of its proper divisors (181810218).

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

138733782 is a wasteful number, since it uses less digits than its factorization.

138733782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701.

The product of its digits is 169344, while the sum is 42.

The square root of 138733782 is about 11778.5305535113. The cubic root of 138733782 is about 517.6792312502.

It can be divided in two parts, 1 and 38733782, that added together give a palindrome (38733783).

The spelling of 138733782 in words is "one hundred thirty-eight million, seven hundred thirty-three thousand, seven hundred eighty-two".