1280474 has 16 divisors (see below), whose sum is σ = 2190888. Its totient is φ = 556032.

The previous prime is 1280473. The next prime is 1280519. The reversal of 1280474 is 4740821.

It can be written as a sum of positive squares in 4 ways, for example, as 797449 + 483025 = 893^2 + 695^2 .

It is a super-2 number, since 2×1280474² = 3279227329352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1280473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007 + ... + 1890.

2^1280474 is an apocalyptic number.

1280474 is a deficient number, since it is larger than the sum of its proper divisors (910414).

1280474 is a wasteful number, since it uses less digits than its factorization.

1280474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 1280474 is about 1131.5803108927. The cubic root of 1280474 is about 108.5901054468.

The spelling of 1280474 in words is "one million, two hundred eighty thousand, four hundred seventy-four".