2781468 has 18 divisors (see below), whose sum is σ = 7031024. Its totient is φ = 927144.

The previous prime is 2781463. The next prime is 2781469. The reversal of 2781468 is 8641872.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 77263 = 2781468 / (2 + 7 + 8 + 1 + 4 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38596 + ... + 38667.

2^2781468 is an apocalyptic number.

It is an amenable number.

2781468 is an abundant number, since it is smaller than the sum of its proper divisors (4249556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2781468 is a wasteful number, since it uses less digits than its factorization.

2781468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77273 (or 77268 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 2781468 is about 1667.7733658984. The cubic root of 2781468 is about 140.6343324177.

It can be divided in two parts, 2781 and 468, that added together give a square (3249 = 57²).

The spelling of 2781468 in words is "two million, seven hundred eighty-one thousand, four hundred sixty-eight".