2698809840 has 200 divisors, whose sum is σ = 9925146000. Its totient is φ = 677320704.

The previous prime is 2698809809. The next prime is 2698809851. The reversal of 2698809840 is 489088962.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 97911 + ... + 122409.

It is an arithmetic number, because the mean of its divisors is an integer number (49625730).

Almost surely, 2^2698809840 is an apocalyptic number.

2698809840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2698809840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4962573000).

2698809840 is an abundant number, since it is smaller than the sum of its proper divisors (7226336160).

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

2698809840 is a wasteful number, since it uses less digits than its factorization.

2698809840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24541 (or 24526 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 2698809840 is about 51950.0706448028. The cubic root of 2698809840 is about 1392.2720187779.

The spelling of 2698809840 in words is "two billion, six hundred ninety-eight million, eight hundred nine thousand, eight hundred forty".