2689152780 has 24 divisors (see below), whose sum is σ = 7529627952. Its totient is φ = 717107392.

The previous prime is 2689152779. The next prime is 2689152787. The reversal of 2689152780 is 872519862.

It is not an unprimeable number, because it can be changed into a prime (2689152787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22409547 + ... + 22409666.

It is an arithmetic number, because the mean of its divisors is an integer number (313734498).

Almost surely, 2^2689152780 is an apocalyptic number.

2689152780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2689152780 is an abundant number, since it is smaller than the sum of its proper divisors (4840475172).

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

2689152780 is a wasteful number, since it uses less digits than its factorization.

2689152780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44819225 (or 44819223 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 2689152780 is about 51857.0417590514. The cubic root of 2689152780 is about 1390.6093941303.

The spelling of 2689152780 in words is "two billion, six hundred eighty-nine million, one hundred fifty-two thousand, seven hundred eighty".