2780354 has 4 divisors (see below), whose sum is σ = 4170534. Its totient is φ = 1390176.

The previous prime is 2780353. The next prime is 2780357. The reversal of 2780354 is 4530872.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2647129 + 133225 = 1627^2 + 365^2 .

It is not an unprimeable number, because it can be changed into a prime (2780353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695087 + ... + 695090.

2^2780354 is an apocalyptic number.

2780354 is a deficient number, since it is larger than the sum of its proper divisors (1390180).

2780354 is a wasteful number, since it uses less digits than its factorization.

2780354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390179.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 2780354 is about 1667.4393542195. The cubic root of 2780354 is about 140.6155548553.

The spelling of 2780354 in words is "two million, seven hundred eighty thousand, three hundred fifty-four".