1780468 has 12 divisors (see below), whose sum is σ = 3167332. Its totient is φ = 875520.

The previous prime is 1780463. The next prime is 1780469. The reversal of 1780468 is 8640871.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 272484 + 1507984 = 522^2 + 1228^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1780463) 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, 3405 + ... + 3892.

2^1780468 is an apocalyptic number.

It is an amenable number.

1780468 is a deficient number, since it is larger than the sum of its proper divisors (1386864).

1780468 is a wasteful number, since it uses less digits than its factorization.

1780468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7362 (or 7360 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 1780468 is about 1334.3417853009. The cubic root of 1780468 is about 121.2024477861.

The spelling of 1780468 in words is "one million, seven hundred eighty thousand, four hundred sixty-eight".