2540705832 has 64 divisors (see below), whose sum is σ = 8065737600. Its totient is φ = 725915520.

The previous prime is 2540705813. The next prime is 2540705857. The reversal of 2540705832 is 2385070452.

2540705832 is a `hidden beast` number, since 2 + 5 + 4 + 0 + 70 + 583 + 2 = 666.

It is a super-2 number, since 2×2540705832² = 12910372249517624448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 838669 + ... + 841692.

It is an arithmetic number, because the mean of its divisors is an integer number (126027150).

Almost surely, 2^2540705832 is an apocalyptic number.

It is an amenable number.

2540705832 is an abundant number, since it is smaller than the sum of its proper divisors (5525031768).

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

2540705832 is a wasteful number, since it uses less digits than its factorization.

2540705832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680383 (or 1680373 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 2540705832 is about 50405.4147091362. The cubic root of 2540705832 is about 1364.5353617225.

The spelling of 2540705832 in words is "two billion, five hundred forty million, seven hundred five thousand, eight hundred thirty-two".