30985538 has 8 divisors (see below), whose sum is σ = 47066880. Its totient is φ = 15296580.

The previous prime is 30985519. The next prime is 30985541. The reversal of 30985538 is 83558903.

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 = 30985495 and 30985504.

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, 97898 + ... + 98213.

It is an arithmetic number, because the mean of its divisors is an integer number (5883360).

Almost surely, 2^30985538 is an apocalyptic number.

30985538 is a deficient number, since it is larger than the sum of its proper divisors (16081342).

30985538 is a wasteful number, since it uses less digits than its factorization.

30985538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196192.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 30985538 is about 5566.4654853866. The cubic root of 30985538 is about 314.0892074826.

The spelling of 30985538 in words is "thirty million, nine hundred eighty-five thousand, five hundred thirty-eight".