2689323780 has 192 divisors, whose sum is σ = 9132834816. Its totient is φ = 582336000.

The previous prime is 2689323761. The next prime is 2689323803. The reversal of 2689323780 is 873239862.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 260925 + ... + 271035.

It is an arithmetic number, because the mean of its divisors is an integer number (47566848).

Almost surely, 2^2689323780 is an apocalyptic number.

2689323780 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 2689323780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4566417408).

2689323780 is an abundant number, since it is smaller than the sum of its proper divisors (6443511036).

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

2689323780 is a wasteful number, since it uses less digits than its factorization.

2689323780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10178 (or 10176 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 2689323780 is about 51858.6904963864. The cubic root of 2689323780 is about 1390.6388692334.

The spelling of 2689323780 in words is "two billion, six hundred eighty-nine million, three hundred twenty-three thousand, seven hundred eighty".