2491632 has 120 divisors (see below), whose sum is σ = 8259888. Its totient is φ = 696960.

The previous prime is 2491609. The next prime is 2491649. The reversal of 2491632 is 2361942.

2491632 is a `hidden beast` number, since 24 + 9 + 1 + 632 = 666.

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 = 2491596 and 2491605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191658 + ... + 191670.

2^2491632 is an apocalyptic number.

2491632 is a gapful number since it is divisible by the number (22) 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 2491632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4129944).

2491632 is an abundant number, since it is smaller than the sum of its proper divisors (5768256).

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

2491632 is a wasteful number, since it uses less digits than its factorization.

2491632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 29 counting only the distinct ones).

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

The square root of 2491632 is about 1578.4904180894. The cubic root of 2491632 is about 135.5692832505.

It can be divided in two parts, 249 and 1632, that added together give a palindrome (1881).

The spelling of 2491632 in words is "two million, four hundred ninety-one thousand, six hundred thirty-two".