1957648 has 60 divisors (see below), whose sum is σ = 4834512. Its totient is φ = 759360.

The previous prime is 1957639. The next prime is 1957651. The reversal of 1957648 is 8467591.

It is a self number, because there is not a number n which added to its sum of digits gives 1957648.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8511 + ... + 8737.

2^1957648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1957648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2417256).

1957648 is an abundant number, since it is smaller than the sum of its proper divisors (2876864).

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

1957648 is a wasteful number, since it uses less digits than its factorization.

1957648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 247 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 1957648 is about 1399.1597478487. The cubic root of 1957648 is about 125.0964162788.

The spelling of 1957648 in words is "one million, nine hundred fifty-seven thousand, six hundred forty-eight".