138750632 has 8 divisors (see below), whose sum is σ = 260157450. Its totient is φ = 69375312.

The previous prime is 138750631. The next prime is 138750649. The reversal of 138750632 is 236057831.

It can be written as a sum of positive squares in only one way, i.e., 92428996 + 46321636 = 9614^2 + 6806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 138750592 and 138750601.

It is not an unprimeable number, because it can be changed into a prime (138750631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8671907 + ... + 8671922.

Almost surely, 2^138750632 is an apocalyptic number.

It is an amenable number.

138750632 is a deficient number, since it is larger than the sum of its proper divisors (121406818).

138750632 is a wasteful number, since it uses less digits than its factorization.

138750632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17343835 (or 17343831 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 138750632 is about 11779.2458162651. The cubic root of 138750632 is about 517.7001887555.

The spelling of 138750632 in words is "one hundred thirty-eight million, seven hundred fifty thousand, six hundred thirty-two".