1283660 has 48 divisors (see below), whose sum is σ = 3157056. Its totient is φ = 429312.

The previous prime is 1283603. The next prime is 1283677. The reversal of 1283660 is 663821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7334 + ... + 7506.

It is an arithmetic number, because the mean of its divisors is an integer number (65772).

2^1283660 is an apocalyptic number.

1283660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1283660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1578528).

1283660 is an abundant number, since it is smaller than the sum of its proper divisors (1873396).

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

1283660 is a wasteful number, since it uses less digits than its factorization.

1283660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1283660 is about 1132.9872020460. The cubic root of 1283660 is about 108.6800933556.

The spelling of 1283660 in words is "one million, two hundred eighty-three thousand, six hundred sixty".