2731390620 has 48 divisors (see below), whose sum is σ = 8740451328. Its totient is φ = 624317760.

The previous prime is 2731390609. The next prime is 2731390621. The reversal of 2731390620 is 260931372.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731390621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3251236 + ... + 3252075.

It is an arithmetic number, because the mean of its divisors is an integer number (182092736).

Almost surely, 2^2731390620 is an apocalyptic number.

2731390620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2731390620 is an abundant number, since it is smaller than the sum of its proper divisors (6009060708).

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

2731390620 is a wasteful number, since it uses less digits than its factorization.

2731390620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6503330 (or 6503328 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 2731390620 is about 52262.7077369705. The cubic root of 2731390620 is about 1397.8522544389.

The spelling of 2731390620 in words is "two billion, seven hundred thirty-one million, three hundred ninety thousand, six hundred twenty".