2650398540 has 96 divisors (see below), whose sum is σ = 7838181120. Its totient is φ = 667305216.

The previous prime is 2650398539. The next prime is 2650398587. The reversal of 2650398540 is 458930562.

It is a super-2 number, since 2×2650398540² = 14049224841668263200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2650398492 and 2650398501.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 346194 + ... + 353766.

It is an arithmetic number, because the mean of its divisors is an integer number (81647720).

Almost surely, 2^2650398540 is an apocalyptic number.

2650398540 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 2650398540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3919090560).

2650398540 is an abundant number, since it is smaller than the sum of its proper divisors (5187782580).

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

2650398540 is a wasteful number, since it uses less digits than its factorization.

2650398540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7911 (or 7909 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 2650398540 is about 51482.0215220809. The cubic root of 2650398540 is about 1383.8968725712.

The spelling of 2650398540 in words is "two billion, six hundred fifty million, three hundred ninety-eight thousand, five hundred forty".