2015423520 has 192 divisors, whose sum is σ = 6949877760. Its totient is φ = 486886400.

The previous prime is 2015423503. The next prime is 2015423521. The reversal of 2015423520 is 253245102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (2015423521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2211865 + ... + 2212775.

It is an arithmetic number, because the mean of its divisors is an integer number (36197280).

Almost surely, 2^2015423520 is an apocalyptic number.

2015423520 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 2015423520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3474938880).

2015423520 is an abundant number, since it is smaller than the sum of its proper divisors (4934454240).

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

2015423520 is a wasteful number, since it uses less digits than its factorization.

2015423520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2015423520 is about 44893.4685672649. The cubic root of 2015423520 is about 1263.1514961810.

Adding to 2015423520 its reverse (253245102), we get a palindrome (2268668622).

The spelling of 2015423520 in words is "two billion, fifteen million, four hundred twenty-three thousand, five hundred twenty".