2572115420 has 72 divisors (see below), whose sum is σ = 6307971936. Its totient is φ = 863001216.

The previous prime is 2572115407. The next prime is 2572115423. The reversal of 2572115420 is 245112752.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2572115423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305102 + ... + 313418.

Almost surely, 2^2572115420 is an apocalyptic number.

2572115420 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 2572115420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3153985968).

2572115420 is an abundant number, since it is smaller than the sum of its proper divisors (3735856516).

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

2572115420 is a wasteful number, since it uses less digits than its factorization.

2572115420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8427 (or 8378 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 2572115420 is about 50716.0272497758. The cubic root of 2572115420 is about 1370.1353907433.

The spelling of 2572115420 in words is "two billion, five hundred seventy-two million, one hundred fifteen thousand, four hundred twenty".