1280004 has 24 divisors (see below), whose sum is σ = 3258528. Its totient is φ = 387840.

The previous prime is 1279997. The next prime is 1280023. The reversal of 1280004 is 4000821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4717 + ... + 4980.

It is an arithmetic number, because the mean of its divisors is an integer number (135772).

2^1280004 is an apocalyptic number.

It is an amenable number.

1280004 is an abundant number, since it is smaller than the sum of its proper divisors (1978524).

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

1280004 is a wasteful number, since it uses less digits than its factorization.

1280004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9715 (or 9713 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1280004 is about 1131.3726176640. The cubic root of 1280004 is about 108.5768177644.

Adding to 1280004 its reverse (4000821), we get a palindrome (5280825).

It can be divided in two parts, 128000 and 4, that multiplied together give a cube (512000 = 80³).

The spelling of 1280004 in words is "one million, two hundred eighty thousand, four".