1290448 has 20 divisors (see below), whose sum is σ = 2544480. Its totient is φ = 633824.

The previous prime is 1290439. The next prime is 1290463. The reversal of 1290448 is 8440921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261 + ... + 1627.

It is an arithmetic number, because the mean of its divisors is an integer number (127224).

2^1290448 is an apocalyptic number.

It is an amenable number.

1290448 is a deficient number, since it is larger than the sum of its proper divisors (1254032).

1290448 is a wasteful number, since it uses less digits than its factorization.

1290448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434 (or 1428 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1290448 is about 1135.9788730430. The cubic root of 1290448 is about 108.8713236201.

The spelling of 1290448 in words is "one million, two hundred ninety thousand, four hundred forty-eight".