1421632 has 28 divisors (see below), whose sum is σ = 2862580. Its totient is φ = 700416.

The previous prime is 1421627. The next prime is 1421639. The reversal of 1421632 is 2361241.

It can be written as a sum of positive squares in 2 ways, for example, as 1032256 + 389376 = 1016^2 + 624^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6094 + ... + 6322.

It is an arithmetic number, because the mean of its divisors is an integer number (102235).

2^1421632 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 1421632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1431290).

1421632 is an abundant number, since it is smaller than the sum of its proper divisors (1440948).

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

1421632 is an equidigital number, since it uses as much as digits as its factorization.

1421632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 328 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 1421632 is about 1192.3221041313. The cubic root of 1421632 is about 112.4421299075.

Adding to 1421632 its reverse (2361241), we get a palindrome (3782873).

The spelling of 1421632 in words is "one million, four hundred twenty-one thousand, six hundred thirty-two".