2421515320 has 96 divisors (see below), whose sum is σ = 6509436480. Its totient is φ = 807770880.

The previous prime is 2421515303. The next prime is 2421515321. The reversal of 2421515320 is 235151242.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421515321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55825 + ... + 89215.

It is an arithmetic number, because the mean of its divisors is an integer number (67806630).

Almost surely, 2^2421515320 is an apocalyptic number.

2421515320 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 2421515320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3254718240).

2421515320 is an abundant number, since it is smaller than the sum of its proper divisors (4087921160).

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

2421515320 is a wasteful number, since it uses less digits than its factorization.

2421515320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33453 (or 33442 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2421515320 is about 49208.8947244296. The cubic root of 2421515320 is about 1342.8548550048.

Adding to 2421515320 its reverse (235151242), we get a palindrome (2656666562).

The spelling of 2421515320 in words is "two billion, four hundred twenty-one million, five hundred fifteen thousand, three hundred twenty".