1351812 has 108 divisors (see below), whose sum is σ = 4245360. Its totient is φ = 332640.

The previous prime is 1351799. The next prime is 1351813. The reversal of 1351812 is 2181531.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1351813) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 71139 + ... + 71157.

2^1351812 is an apocalyptic number.

1351812 is a gapful number since it is divisible by the number (12) 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 1351812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2122680).

1351812 is an abundant number, since it is smaller than the sum of its proper divisors (2893548).

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

1351812 is a wasteful number, since it uses less digits than its factorization.

1351812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 42 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 1351812 is about 1162.6745030317. The cubic root of 1351812 is about 110.5703707418.

It can be divided in two parts, 13518 and 12, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 1351812 in words is "one million, three hundred fifty-one thousand, eight hundred twelve".