2780262464 has 28 divisors (see below), whose sum is σ = 6305239104. Its totient is φ = 1191540864.

The previous prime is 2780262461. The next prime is 2780262479. The reversal of 2780262464 is 4642620872.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (2780262461) 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, 3102524 + ... + 3103419.

Almost surely, 2^2780262464 is an apocalyptic number.

It is an amenable number.

2780262464 is an abundant number, since it is smaller than the sum of its proper divisors (3524976640).

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

2780262464 is an equidigital number, since it uses as much as digits as its factorization.

2780262464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205962 (or 6205952 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 41.

The square root of 2780262464 is about 52728.1942038602. The cubic root of 2780262464 is about 1406.1401170332.

The spelling of 2780262464 in words is "two billion, seven hundred eighty million, two hundred sixty-two thousand, four hundred sixty-four".