2780953 has 12 divisors (see below), whose sum is σ = 3326848. Its totient is φ = 2277000.

The previous prime is 2780951. The next prime is 2780971. The reversal of 2780953 is 3590872.

It is not a de Polignac number, because 2780953 - 2¹ = 2780951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2780951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3328 + ... + 4078.

2^2780953 is an apocalyptic number.

2780953 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2780953 is a deficient number, since it is larger than the sum of its proper divisors (545895).

2780953 is an equidigital number, since it uses as much as digits as its factorization.

2780953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2780953 is about 1667.6189612738. The cubic root of 2780953 is about 140.6256522110.

The spelling of 2780953 in words is "two million, seven hundred eighty thousand, nine hundred fifty-three".