15532020224 has 40 divisors (see below), whose sum is σ = 35467099008. Its totient is φ = 6656578560.

The previous prime is 15532020191. The next prime is 15532020253. The reversal of 15532020224 is 42202023551.

It is a junction number, because it is equal to n+sod(n) for n = 15532020193 and 15532020202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2163272 + ... + 2170439.

Almost surely, 2^15532020224 is an apocalyptic number.

15532020224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15532020224 is an abundant number, since it is smaller than the sum of its proper divisors (19935078784).

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

15532020224 is an frugal number, since it uses more digits than its factorization.

15532020224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4333736 (or 4333720 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 15532020224 its reverse (42202023551), we get a palindrome (57734043775).

The spelling of 15532020224 in words is "fifteen billion, five hundred thirty-two million, twenty thousand, two hundred twenty-four".