138332650 has 24 divisors (see below), whose sum is σ = 262158444. Its totient is φ = 54288000.

The previous prime is 138332641. The next prime is 138332651. The reversal of 138332650 is 56233831.

It can be written as a sum of positive squares in 6 ways, for example, as 91833889 + 46498761 = 9583^2 + 6819^2 .

It is not an unprimeable number, because it can be changed into a prime (138332651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23451 + ... + 28750.

Almost surely, 2^138332650 is an apocalyptic number.

138332650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138332650 is a deficient number, since it is larger than the sum of its proper divisors (123825794).

138332650 is a wasteful number, since it uses less digits than its factorization.

138332650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52266 (or 52261 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 138332650 is about 11761.4901266804. The cubic root of 138332650 is about 517.1798139163.

The spelling of 138332650 in words is "one hundred thirty-eight million, three hundred thirty-two thousand, six hundred fifty".