15424042220 has 12 divisors (see below), whose sum is σ = 32390488704. Its totient is φ = 6169616880.

The previous prime is 15424042169. The next prime is 15424042229. The reversal of 15424042220 is 2224042451.

It is a self number, because there is not a number n which added to its sum of digits gives 15424042220.

It is not an unprimeable number, because it can be changed into a prime (15424042229) 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, 385601036 + ... + 385601075.

It is an arithmetic number, because the mean of its divisors is an integer number (2699207392).

Almost surely, 2^15424042220 is an apocalyptic number.

15424042220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15424042220 is an abundant number, since it is smaller than the sum of its proper divisors (16966446484).

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

15424042220 is a wasteful number, since it uses less digits than its factorization.

15424042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771202120 (or 771202118 counting only the distinct ones).

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

Adding to 15424042220 its reverse (2224042451), we get a palindrome (17648084671).

The spelling of 15424042220 in words is "fifteen billion, four hundred twenty-four million, forty-two thousand, two hundred twenty".