2780473 has 4 divisors (see below), whose sum is σ = 2839680. Its totient is φ = 2721268.

The previous prime is 2780467. The next prime is 2780501. The reversal of 2780473 is 3740872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2780473 - 2⁹ = 2779961 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2780413) 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, 29533 + ... + 29626.

It is an arithmetic number, because the mean of its divisors is an integer number (709920).

2^2780473 is an apocalyptic number.

It is an amenable number.

2780473 is a deficient number, since it is larger than the sum of its proper divisors (59207).

2780473 is an equidigital number, since it uses as much as digits as its factorization.

2780473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59206.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 2780473 is about 1667.4750372944. The cubic root of 2780473 is about 140.6175609563.

The spelling of 2780473 in words is "two million, seven hundred eighty thousand, four hundred seventy-three".