2698215840 has 384 divisors, whose sum is σ = 10102579200. Its totient is φ = 670602240.

The previous prime is 2698215799. The next prime is 2698215889. The reversal of 2698215840 is 485128962.

2698215840 is a `hidden beast` number, since 2 + 69 + 8 + 2 + 1 + 584 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5827449 + ... + 5827911.

It is an arithmetic number, because the mean of its divisors is an integer number (26308800).

Almost surely, 2^2698215840 is an apocalyptic number.

2698215840 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 2698215840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5051289600).

2698215840 is an abundant number, since it is smaller than the sum of its proper divisors (7404363360).

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

2698215840 is a wasteful number, since it uses less digits than its factorization.

2698215840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 2698215840 is about 51944.3533023562. The cubic root of 2698215840 is about 1392.1698663095.

The spelling of 2698215840 in words is "two billion, six hundred ninety-eight million, two hundred fifteen thousand, eight hundred forty".