1641432 has 32 divisors (see below), whose sum is σ = 4420080. Its totient is φ = 504960.

The previous prime is 1641407. The next prime is 1641457. The reversal of 1641432 is 2341461.

It is an interprime number because it is at equal distance from previous prime (1641407) and next prime (1641457).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1641399 and 1641408.

It is a congruent 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, 2319 + ... + 2942.

2^1641432 is an apocalyptic number.

1641432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1641432 is an abundant number, since it is smaller than the sum of its proper divisors (2778648).

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

1641432 is a wasteful number, since it uses less digits than its factorization.

1641432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283 (or 5279 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1641432 is about 1281.1838275595. The cubic root of 1641432 is about 117.9616843904.

Adding to 1641432 its reverse (2341461), we get a palindrome (3982893).

It can be divided in two parts, 164 and 1432, that added together give a triangular number (1596 = T₅₆).

The spelling of 1641432 in words is "one million, six hundred forty-one thousand, four hundred thirty-two".