2780000355 has 16 divisors (see below), whose sum is σ = 4852364544. Its totient is φ = 1347878880.

The previous prime is 2780000347. The next prime is 2780000359. The reversal of 2780000355 is 5530000872.

It is a happy number.

2780000355 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2780000355 - 2³ = 2780000347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2780000359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8424079 + ... + 8424408.

It is an arithmetic number, because the mean of its divisors is an integer number (303272784).

Almost surely, 2^2780000355 is an apocalyptic number.

2780000355 is a deficient number, since it is larger than the sum of its proper divisors (2072364189).

2780000355 is a wasteful number, since it uses less digits than its factorization.

2780000355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16848506.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 2780000355 is about 52725.7086723355. The cubic root of 2780000355 is about 1406.0959277324.

The spelling of 2780000355 in words is "two billion, seven hundred eighty million, three hundred fifty-five", and thus it is an aban number.