2015044620 has 144 divisors (see below), whose sum is σ = 6042865920. Its totient is φ = 500273280.

The previous prime is 2015044607. The next prime is 2015044627. The reversal of 2015044620 is 264405102.

It is not an unprimeable number, because it can be changed into a prime (2015044627) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15381955 + ... + 15382085.

Almost surely, 2^2015044620 is an apocalyptic number.

2015044620 is a gapful number since it is divisible by the number (20) 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 2015044620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3021432960).

2015044620 is an abundant number, since it is smaller than the sum of its proper divisors (4027821300).

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

2015044620 is a wasteful number, since it uses less digits than its factorization.

2015044620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2015044620 is about 44889.2483786485. The cubic root of 2015044620 is about 1263.0723336472.

Adding to 2015044620 its reverse (264405102), we get a palindrome (2279449722).

The spelling of 2015044620 in words is "two billion, fifteen million, forty-four thousand, six hundred twenty".