30872858 has 8 divisors (see below), whose sum is σ = 46552320. Its totient is φ = 15355420.

The previous prime is 30872857. The next prime is 30872909. The reversal of 30872858 is 85827803.

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

It is a super-2 number, since 2×30872858² = 1906266722176328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30872851) 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, 40028 + ... + 40791.

It is an arithmetic number, because the mean of its divisors is an integer number (5819040).

Almost surely, 2^30872858 is an apocalyptic number.

30872858 is a deficient number, since it is larger than the sum of its proper divisors (15679462).

30872858 is a wasteful number, since it uses less digits than its factorization.

30872858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81012.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 30872858 is about 5556.3349431077. The cubic root of 30872858 is about 313.7080128784.

The spelling of 30872858 in words is "thirty million, eight hundred seventy-two thousand, eight hundred fifty-eight".