22002431420 has 24 divisors (see below), whose sum is σ = 46250492400. Its totient is φ = 8792327552.

The previous prime is 22002431411. The next prime is 22002431449. The reversal of 22002431420 is 2413420022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22002431392 and 22002431401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519425 + ... + 560184.

It is an arithmetic number, because the mean of its divisors is an integer number (1927103850).

Almost surely, 2^22002431420 is an apocalyptic number.

22002431420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22002431420 is an abundant number, since it is smaller than the sum of its proper divisors (24248060980).

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

22002431420 is a wasteful number, since it uses less digits than its factorization.

22002431420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080637 (or 1080635 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22002431420 its reverse (2413420022), we get a palindrome (24415851442).

The spelling of 22002431420 in words is "twenty-two billion, two million, four hundred thirty-one thousand, four hundred twenty".