1283616 has 36 divisors (see below), whose sum is σ = 3651102. Its totient is φ = 427776.

The previous prime is 1283603. The next prime is 1283677. The reversal of 1283616 is 6163821.

It can be written as a sum of positive squares in only one way, i.e., 992016 + 291600 = 996^2 + 540^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1283616.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1941 + ... + 2516.

2^1283616 is an apocalyptic number.

1283616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1283616 is an abundant number, since it is smaller than the sum of its proper divisors (2367486).

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

1283616 is a wasteful number, since it uses less digits than its factorization.

1283616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473 (or 4462 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1283616 is about 1132.9677841845. The cubic root of 1283616 is about 108.6788515993.

The spelling of 1283616 in words is "one million, two hundred eighty-three thousand, six hundred sixteen".