138782230 has 16 divisors (see below), whose sum is σ = 260669664. Its totient is φ = 53099200.

The previous prime is 138782221. The next prime is 138782243. The reversal of 138782230 is 32287831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301471 + ... + 301930.

It is an arithmetic number, because the mean of its divisors is an integer number (16291854).

Almost surely, 2^138782230 is an apocalyptic number.

138782230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138782230 is a deficient number, since it is larger than the sum of its proper divisors (121887434).

138782230 is a wasteful number, since it uses less digits than its factorization.

138782230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603431.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 138782230 is about 11780.5869972595. The cubic root of 138782230 is about 517.7394847902.

The spelling of 138782230 in words is "one hundred thirty-eight million, seven hundred eighty-two thousand, two hundred thirty".