30949858 has 8 divisors (see below), whose sum is σ = 48443328. Its totient is φ = 14802084.

The previous prime is 30949781. The next prime is 30949859. The reversal of 30949858 is 85894903.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 672823 = 30949858 / (3 + 0 + 9 + 4 + 9 + 8 + 5 + 8).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (30949859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336366 + ... + 336457.

It is an arithmetic number, because the mean of its divisors is an integer number (6055416).

Almost surely, 2^30949858 is an apocalyptic number.

30949858 is a deficient number, since it is larger than the sum of its proper divisors (17493470).

30949858 is a wasteful number, since it uses less digits than its factorization.

30949858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672848.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 30949858 is about 5563.2596559931. The cubic root of 30949858 is about 313.9686027541.

The spelling of 30949858 in words is "thirty million, nine hundred forty-nine thousand, eight hundred fifty-eight".