100639738 has 8 divisors (see below), whose sum is σ = 151021332. Its totient is φ = 50299296.

The previous prime is 100639729. The next prime is 100639783. The reversal of 100639738 is 837936001.

It can be written as a sum of positive squares in 2 ways, for example, as 99860049 + 779689 = 9993^2 + 883^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 100639697 and 100639706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3195 + ... + 14542.

Almost surely, 2^100639738 is an apocalyptic number.

100639738 is a deficient number, since it is larger than the sum of its proper divisors (50381594).

100639738 is a wasteful number, since it uses less digits than its factorization.

100639738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20576.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 100639738 is about 10031.9359048989. The cubic root of 100639738 is about 465.1465803741.

The spelling of 100639738 in words is "one hundred million, six hundred thirty-nine thousand, seven hundred thirty-eight".