15042015220 has 96 divisors (see below), whose sum is σ = 33591710880. Its totient is φ = 5647810560.

The previous prime is 15042015139. The next prime is 15042015221. The reversal of 15042015220 is 2251024051.

It can be written as a sum of positive squares in 16 ways, for example, as 7583274724 + 7458740496 = 87082^2 + 86364^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15042015191 and 15042015200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15042015221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8012922 + ... + 8014798.

It is an arithmetic number, because the mean of its divisors is an integer number (349913655).

Almost surely, 2^15042015220 is an apocalyptic number.

15042015220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15042015220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16795855440).

15042015220 is an abundant number, since it is smaller than the sum of its proper divisors (18549695660).

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

15042015220 is a wasteful number, since it uses less digits than its factorization.

15042015220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293 (or 2291 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 15042015220 its reverse (2251024051), we get a palindrome (17293039271).

The spelling of 15042015220 in words is "fifteen billion, forty-two million, fifteen thousand, two hundred twenty".