15402224420 has 24 divisors (see below), whose sum is σ = 35285096448. Its totient is φ = 5600808800.

The previous prime is 15402224363. The next prime is 15402224447. The reversal of 15402224420 is 2442220451.

It is a self number, because there is not a number n which added to its sum of digits gives 15402224420.

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, 35004836 + ... + 35005275.

It is an arithmetic number, because the mean of its divisors is an integer number (1470212352).

Almost surely, 2^15402224420 is an apocalyptic number.

15402224420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15402224420 is an abundant number, since it is smaller than the sum of its proper divisors (19882872028).

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

15402224420 is a wasteful number, since it uses less digits than its factorization.

15402224420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70010131 (or 70010129 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 15402224420 its reverse (2442220451), we get a palindrome (17844444871).

The spelling of 15402224420 in words is "fifteen billion, four hundred two million, two hundred twenty-four thousand, four hundred twenty".