30293881 has 16 divisors (see below), whose sum is σ = 32997888. Its totient is φ = 27705600.

The previous prime is 30293869. The next prime is 30293891. The reversal of 30293881 is 18839203.

It is a cyclic number.

It is not a de Polignac number, because 30293881 - 2¹⁷ = 30162809 is a prime.

It is a super-2 number, since 2×30293881² = 1835438452084322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30293821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135736 + ... + 135958.

It is an arithmetic number, because the mean of its divisors is an integer number (2062368).

Almost surely, 2^30293881 is an apocalyptic number.

It is an amenable number.

30293881 is a deficient number, since it is larger than the sum of its proper divisors (2704007).

30293881 is a wasteful number, since it uses less digits than its factorization.

30293881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 30293881 is about 5503.9877361782. The cubic root of 30293881 is about 311.7345738704.

The spelling of 30293881 in words is "thirty million, two hundred ninety-three thousand, eight hundred eighty-one".