2798899920 has 100 divisors (see below), whose sum is σ = 9721016580. Its totient is φ = 746371584.

The previous prime is 2798899919. The next prime is 2798899931. The reversal of 2798899920 is 299988972.

2798899920 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 744634944 + 2054264976 = 27288^2 + 45324^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 209485 + ... + 222444.

Almost surely, 2^2798899920 is an apocalyptic number.

2798899920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2798899920 is an abundant number, since it is smaller than the sum of its proper divisors (6922116660).

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

2798899920 is a wasteful number, since it uses less digits than its factorization.

2798899920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431954 (or 431939 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The square root of 2798899920 is about 52904.6304211645. The cubic root of 2798899920 is about 1409.2751367010.

The spelling of 2798899920 in words is "two billion, seven hundred ninety-eight million, eight hundred ninety-nine thousand, nine hundred twenty".