30224881 has 4 divisors (see below), whose sum is σ = 30255732. Its totient is φ = 30194032.

The previous prime is 30224879. The next prime is 30224899. The reversal of 30224881 is 18842203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18842203 = 31 ⋅607813.

It can be written as a sum of positive squares in 2 ways, for example, as 467856 + 29757025 = 684^2 + 5455^2 .

It is a cyclic number.

It is not a de Polignac number, because 30224881 - 2¹ = 30224879 is a prime.

It is a super-2 number, since 2×30224881² = 1827086862928322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30224851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13906 + ... + 15931.

It is an arithmetic number, because the mean of its divisors is an integer number (7563933).

Almost surely, 2^30224881 is an apocalyptic number.

It is an amenable number.

30224881 is a deficient number, since it is larger than the sum of its proper divisors (30851).

30224881 is a wasteful number, since it uses less digits than its factorization.

30224881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30850.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 30224881 is about 5497.7159802958. The cubic root of 30224881 is about 311.4977159488.

The spelling of 30224881 in words is "thirty million, two hundred twenty-four thousand, eight hundred eighty-one".