2543940628 has 12 divisors (see below), whose sum is σ = 4686206560. Its totient is φ = 1205024472.

The previous prime is 2543940557. The next prime is 2543940629. The reversal of 2543940628 is 8260493452.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543940629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16736376 + ... + 16736527.

Almost surely, 2^2543940628 is an apocalyptic number.

It is an amenable number.

2543940628 is a deficient number, since it is larger than the sum of its proper divisors (2142265932).

2543940628 is a wasteful number, since it uses less digits than its factorization.

2543940628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33472926 (or 33472924 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 2543940628 is about 50437.4922850056. The cubic root of 2543940628 is about 1365.1142194447.

The spelling of 2543940628 in words is "two billion, five hundred forty-three million, nine hundred forty thousand, six hundred twenty-eight".