30881022 has 16 divisors (see below), whose sum is σ = 63754752. Its totient is φ = 9961560.

The previous prime is 30881003. The next prime is 30881029. The reversal of 30881022 is 22018803.

It is a junction number, because it is equal to n+sod(n) for n = 30880983 and 30881001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30881029) 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 7 ways as a sum of consecutive naturals, for example, 82828 + ... + 83199.

It is an arithmetic number, because the mean of its divisors is an integer number (3984672).

Almost surely, 2^30881022 is an apocalyptic number.

30881022 is an abundant number, since it is smaller than the sum of its proper divisors (32873730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30881022 is a wasteful number, since it uses less digits than its factorization.

30881022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166063.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 30881022 is about 5557.0695514812. The cubic root of 30881022 is about 313.7356626941.

Adding to 30881022 its reverse (22018803), we get a palindrome (52899825).

The spelling of 30881022 in words is "thirty million, eight hundred eighty-one thousand, twenty-two".