2780897052 has 12 divisors (see below), whose sum is σ = 6488759816. Its totient is φ = 926965680.

The previous prime is 2780897051. The next prime is 2780897069. The reversal of 2780897052 is 2507980872.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2780896992 and 2780897010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780897051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115870699 + ... + 115870722.

Almost surely, 2^2780897052 is an apocalyptic number.

It is an amenable number.

2780897052 is an abundant number, since it is smaller than the sum of its proper divisors (3707862764).

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

2780897052 is a wasteful number, since it uses less digits than its factorization.

2780897052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231741428 (or 231741426 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 2780897052 is about 52734.2114001907. The cubic root of 2780897052 is about 1406.2470915574.

The spelling of 2780897052 in words is "two billion, seven hundred eighty million, eight hundred ninety-seven thousand, fifty-two".