117628538 has 8 divisors (see below), whose sum is σ = 176884020. Its totient is φ = 58667200.

The previous prime is 117628517. The next prime is 117628561. The reversal of 117628538 is 835826711.

It can be written as a sum of positive squares in 2 ways, for example, as 99540529 + 18088009 = 9977^2 + 4253^2 .

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 = 117628495 and 117628504.

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, 72533 + ... + 74136.

Almost surely, 2^117628538 is an apocalyptic number.

117628538 is a deficient number, since it is larger than the sum of its proper divisors (59255482).

117628538 is a wasteful number, since it uses less digits than its factorization.

117628538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147072.

The product of its digits is 80640, while the sum is 41.

The square root of 117628538 is about 10845.6690895491. The cubic root of 117628538 is about 489.9715907450.

The spelling of 117628538 in words is "one hundred seventeen million, six hundred twenty-eight thousand, five hundred thirty-eight".