138796650 has 36 divisors (see below), whose sum is σ = 372901542. Its totient is φ = 37012320.

The previous prime is 138796627. The next prime is 138796661. The reversal of 138796650 is 56697831.

It is a happy number.

138796650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 132641289 + 6155361 = 11517^2 + 2481^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 138796596 and 138796605.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 153769 + ... + 154668.

Almost surely, 2^138796650 is an apocalyptic number.

138796650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138796650 is an abundant number, since it is smaller than the sum of its proper divisors (234104892).

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

138796650 is a wasteful number, since it uses less digits than its factorization.

138796650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308455 (or 308447 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 138796650 is about 11781.1990051947. The cubic root of 138796650 is about 517.7574158678.

The spelling of 138796650 in words is "one hundred thirty-eight million, seven hundred ninety-six thousand, six hundred fifty".