1400812 has 24 divisors (see below), whose sum is σ = 2861600. Its totient is φ = 599760.

The previous prime is 1400809. The next prime is 1400821. The reversal of 1400812 is 2180041.

It is a happy number.

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, 862 + ... + 1882.

2^1400812 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 1400812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1430800).

1400812 is an abundant number, since it is smaller than the sum of its proper divisors (1460788).

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

1400812 is a wasteful number, since it uses less digits than its factorization.

1400812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1400812 is about 1183.5590395075. The cubic root of 1400812 is about 111.8905180143.

Adding to 1400812 its reverse (2180041), we get a palindrome (3580853).

The spelling of 1400812 in words is "one million, four hundred thousand, eight hundred twelve".