2688474990 has 16 divisors (see below), whose sum is σ = 6452340048. Its totient is φ = 716926656.

The previous prime is 2688474983. The next prime is 2688475003. The reversal of 2688474990 is 994748862.

It is a self number, because there is not a number n which added to its sum of digits gives 2688474990.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44807887 + ... + 44807946.

It is an arithmetic number, because the mean of its divisors is an integer number (403271253).

Almost surely, 2^2688474990 is an apocalyptic number.

2688474990 is an abundant number, since it is smaller than the sum of its proper divisors (3763865058).

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

2688474990 is a wasteful number, since it uses less digits than its factorization.

2688474990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89615843.

The product of its (nonzero) digits is 6967296, while the sum is 57.

The square root of 2688474990 is about 51850.5061691783. The cubic root of 2688474990 is about 1390.4925518362.

The spelling of 2688474990 in words is "two billion, six hundred eighty-eight million, four hundred seventy-four thousand, nine hundred ninety".