2540764836 has 81 divisors (see below), whose sum is σ = 6660927819. Its totient is φ = 816577200.

The previous prime is 2540764817. The next prime is 2540764841. The reversal of 2540764836 is 6384670452.

The square root of 2540764836 is 50406.

It is a perfect power (a square), and thus also a powerful number.

2540764836 is a `hidden beast` number, since 2 + 540 + 76 + 4 + 8 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2540764791 and 2540764800.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9375381 + ... + 9375651.

Almost surely, 2^2540764836 is an apocalyptic number.

2540764836 is the 50406-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2540764836

2540764836 is an abundant number, since it is smaller than the sum of its proper divisors (4120162983).

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

2540764836 is a wasteful number, since it uses less digits than its factorization.

2540764836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The cubic root of 2540764836 is about 1364.5459247217.

It can be divided in two parts, 2540 and 764836, that added together give a square (767376 = 876²).

The spelling of 2540764836 in words is "two billion, five hundred forty million, seven hundred sixty-four thousand, eight hundred thirty-six".