1316904 has 32 divisors (see below), whose sum is σ = 3383520. Its totient is φ = 426816.

The previous prime is 1316899. The next prime is 1316921. The reversal of 1316904 is 4096131.

It is a super-2 number, since 2×1316904² = 3468472290432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 147 + ... + 1629.

It is an arithmetic number, because the mean of its divisors is an integer number (105735).

2^1316904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1316904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1691760).

1316904 is an abundant number, since it is smaller than the sum of its proper divisors (2066616).

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

1316904 is a wasteful number, since it uses less digits than its factorization.

1316904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1525 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1316904 is about 1147.5643772791. The cubic root of 1316904 is about 109.6103014808.

The spelling of 1316904 in words is "one million, three hundred sixteen thousand, nine hundred four".