1316628 has 48 divisors (see below), whose sum is σ = 3480960. Its totient is φ = 430272.

The previous prime is 1316621. The next prime is 1316639. The reversal of 1316628 is 8266131.

1316628 is a `hidden beast` number, since 1 + 31 + 6 + 628 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7801 + ... + 7967.

It is an arithmetic number, because the mean of its divisors is an integer number (72520).

2^1316628 is an apocalyptic number.

1316628 is a gapful number since it is divisible by the number (18) 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 1316628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740480).

1316628 is an abundant number, since it is smaller than the sum of its proper divisors (2164332).

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

1316628 is a wasteful number, since it uses less digits than its factorization.

1316628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 245 counting only the distinct ones).

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

The square root of 1316628 is about 1147.4441162863. Note that the first 3 decimals coincide. The cubic root of 1316628 is about 109.6026434797.

It can be divided in two parts, 13 and 16628, that added together give a square (16641 = 129²).

The spelling of 1316628 in words is "one million, three hundred sixteen thousand, six hundred twenty-eight".