30838642 has 8 divisors (see below), whose sum is σ = 47386332. Its totient is φ = 15043200.

The previous prime is 30838609. The next prime is 30838673. The reversal of 30838642 is 24683803.

It can be written as a sum of positive squares in 2 ways, for example, as 29691601 + 1147041 = 5449^2 + 1071^2 .

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 = 30838598 and 30838607.

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, 187959 + ... + 188122.

Almost surely, 2^30838642 is an apocalyptic number.

30838642 is a deficient number, since it is larger than the sum of its proper divisors (16547690).

30838642 is a wasteful number, since it uses less digits than its factorization.

30838642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376124.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 30838642 is about 5553.2550814815. The cubic root of 30838642 is about 313.5920771569.

The spelling of 30838642 in words is "thirty million, eight hundred thirty-eight thousand, six hundred forty-two".