138632435 has 8 divisors (see below), whose sum is σ = 166758480. Its totient is φ = 110639584.

The previous prime is 138632423. The next prime is 138632449. The reversal of 138632435 is 534236831.

138632435 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138632435 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138632395 and 138632404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30992 + ... + 35181.

It is an arithmetic number, because the mean of its divisors is an integer number (20844810).

Almost surely, 2^138632435 is an apocalyptic number.

138632435 is a deficient number, since it is larger than the sum of its proper divisors (28126045).

138632435 is an equidigital number, since it uses as much as digits as its factorization.

138632435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66597.

The product of its digits is 51840, while the sum is 35.

The square root of 138632435 is about 11774.2275755142. The cubic root of 138632435 is about 517.5531431962.

The spelling of 138632435 in words is "one hundred thirty-eight million, six hundred thirty-two thousand, four hundred thirty-five".