30496139 has 4 divisors (see below), whose sum is σ = 31547760. Its totient is φ = 29444520.

The previous prime is 30496127. The next prime is 30496163. The reversal of 30496139 is 93169403.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30496139 - 2²⁰ = 29447563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30496099 and 30496108.

It is not an unprimeable number, because it can be changed into a prime (30496199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525767 + ... + 525824.

It is an arithmetic number, because the mean of its divisors is an integer number (7886940).

Almost surely, 2^30496139 is an apocalyptic number.

30496139 is a deficient number, since it is larger than the sum of its proper divisors (1051621).

30496139 is a wasteful number, since it uses less digits than its factorization.

30496139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051620.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 30496139 is about 5522.3309390148. The cubic root of 30496139 is about 312.4268039768.

The spelling of 30496139 in words is "thirty million, four hundred ninety-six thousand, one hundred thirty-nine".