30021144404 has 48 divisors (see below), whose sum is σ = 57673123200. Its totient is φ = 13627802496.

The previous prime is 30021144359. The next prime is 30021144431. The reversal of 30021144404 is 40444112003.

It is a happy number.

It is a super-2 number, since 2×30021144404² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 30021144404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62054 + ... + 252770.

It is an arithmetic number, because the mean of its divisors is an integer number (1201523400).

Almost surely, 2^30021144404 is an apocalyptic number.

It is an amenable number.

30021144404 is a deficient number, since it is larger than the sum of its proper divisors (27651978796).

30021144404 is a wasteful number, since it uses less digits than its factorization.

30021144404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190832 (or 190830 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 30021144404 its reverse (40444112003), we get a palindrome (70465256407).

The spelling of 30021144404 in words is "thirty billion, twenty-one million, one hundred forty-four thousand, four hundred four".