2576940380 has 72 divisors (see below), whose sum is σ = 6310737216. Its totient is φ = 881328000.

The previous prime is 2576940367. The next prime is 2576940383. The reversal of 2576940380 is 830496752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2576940383) 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, 419330 + ... + 425430.

It is an arithmetic number, because the mean of its divisors is an integer number (87649128).

Almost surely, 2^2576940380 is an apocalyptic number.

2576940380 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 2576940380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3155368608).

2576940380 is an abundant number, since it is smaller than the sum of its proper divisors (3733796836).

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

2576940380 is a wasteful number, since it uses less digits than its factorization.

2576940380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555 (or 6546 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 2576940380 is about 50763.5733572805. The cubic root of 2576940380 is about 1370.9915885904.

The spelling of 2576940380 in words is "two billion, five hundred seventy-six million, nine hundred forty thousand, three hundred eighty".