1351404 has 60 divisors (see below), whose sum is σ = 3652264. Its totient is φ = 435456.

The previous prime is 1351403. The next prime is 1351417. The reversal of 1351404 is 4041531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1351403) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13884 + ... + 13980.

2^1351404 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 1351404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1826132).

1351404 is an abundant number, since it is smaller than the sum of its proper divisors (2300860).

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

1351404 is a wasteful number, since it uses less digits than its factorization.

1351404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1351404 is about 1162.4990322577. The cubic root of 1351404 is about 110.5592456123.

1351404 divided by its sum of digits (18) gives a triangular number (75078 = T₃₈₇).

Adding to 1351404 its reverse (4041531), we get a palindrome (5392935).

The spelling of 1351404 in words is "one million, three hundred fifty-one thousand, four hundred four".