1649232 has 60 divisors (see below), whose sum is σ = 4976244. Its totient is φ = 506880.

The previous prime is 1649213. The next prime is 1649237. The reversal of 1649232 is 2329461.

It can be written as a sum of positive squares in 2 ways, for example, as 266256 + 1382976 = 516^2 + 1176^2 .

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 = 1649196 and 1649205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1432 + ... + 2312.

2^1649232 is an apocalyptic number.

1649232 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 1649232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2488122).

1649232 is an abundant number, since it is smaller than the sum of its proper divisors (3327012).

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

1649232 is a wasteful number, since it uses less digits than its factorization.

1649232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908 (or 899 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 1649232 is about 1284.2242794777. The cubic root of 1649232 is about 118.1482384784.

It can be divided in two parts, 1649 and 232, that added together give a palindrome (1881).

The spelling of 1649232 in words is "one million, six hundred forty-nine thousand, two hundred thirty-two".