1641456 has 30 divisors (see below), whose sum is σ = 4594200. Its totient is φ = 547104.

The previous prime is 1641407. The next prime is 1641457. The reversal of 1641456 is 6541461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5556 + ... + 5843.

It is an arithmetic number, because the mean of its divisors is an integer number (153140).

2^1641456 is an apocalyptic number.

1641456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1641456 is an abundant number, since it is smaller than the sum of its proper divisors (2952744).

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

1641456 is a wasteful number, since it uses less digits than its factorization.

1641456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11413 (or 11404 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1641456 is about 1281.1931938627. The cubic root of 1641456 is about 117.9622593084.

The spelling of 1641456 in words is "one million, six hundred forty-one thousand, four hundred fifty-six".