1478881 has 4 divisors (see below), whose sum is σ = 1565892. Its totient is φ = 1391872.

The previous prime is 1478863. The next prime is 1478887. The reversal of 1478881 is 1888741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1888741 = 29 ⋅65129.

It can be written as a sum of positive squares in 2 ways, for example, as 1166400 + 312481 = 1080^2 + 559^2 .

It is a cyclic number.

It is not a de Polignac number, because 1478881 - 2⁹ = 1478369 is a prime.

It is a super-3 number, since 3×1478881³ = 9703333156181015523, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1478881.

It is not an unprimeable number, because it can be changed into a prime (1478887) 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, 43480 + ... + 43513.

It is an arithmetic number, because the mean of its divisors is an integer number (391473).

2^1478881 is an apocalyptic number.

It is an amenable number.

1478881 is a deficient number, since it is larger than the sum of its proper divisors (87011).

1478881 is an equidigital number, since it uses as much as digits as its factorization.

1478881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87010.

The product of its digits is 14336, while the sum is 37.

The square root of 1478881 is about 1216.0925129282. The cubic root of 1478881 is about 113.9316559677.

The spelling of 1478881 in words is "one million, four hundred seventy-eight thousand, eight hundred eighty-one".