1641260 has 24 divisors (see below), whose sum is σ = 3477600. Its totient is φ = 650624.

The previous prime is 1641253. The next prime is 1641281. The reversal of 1641260 is 621461.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2441 + ... + 3039.

It is an arithmetic number, because the mean of its divisors is an integer number (144900).

2^1641260 is an apocalyptic number.

1641260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1641260 is an abundant number, since it is smaller than the sum of its proper divisors (1836340).

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

1641260 is a wasteful number, since it uses less digits than its factorization.

1641260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1641260 is about 1281.1167003829. The cubic root of 1641260 is about 117.9575639804.

The spelling of 1641260 in words is "one million, six hundred forty-one thousand, two hundred sixty".