1397648 has 20 divisors (see below), whose sum is σ = 3095040. Its totient is φ = 598944.

The previous prime is 1397633. The next prime is 1397657. The reversal of 1397648 is 8467931.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an Ulam 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, 6128 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (154752).

2^1397648 is an apocalyptic number.

It is an amenable number.

1397648 is an abundant number, since it is smaller than the sum of its proper divisors (1697392).

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

1397648 is a wasteful number, since it uses less digits than its factorization.

1397648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12494 (or 12488 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 1397648 is about 1182.2216374268. The cubic root of 1397648 is about 111.8062125125.

The spelling of 1397648 in words is "one million, three hundred ninety-seven thousand, six hundred forty-eight".