2640032 has 48 divisors (see below), whose sum is σ = 5769792. Its totient is φ = 1182720.

The previous prime is 2640023. The next prime is 2640041. The reversal of 2640032 is 2300462.

It is an interprime number because it is at equal distance from previous prime (2640023) and next prime (2640041).

It is a super-2 number, since 2×2640032² = 13939537922048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 12407 + ... + 12617.

It is an arithmetic number, because the mean of its divisors is an integer number (120204).

2^2640032 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 2640032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2884896).

2640032 is an abundant number, since it is smaller than the sum of its proper divisors (3129760).

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

2640032 is a wasteful number, since it uses less digits than its factorization.

2640032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2640032 is about 1624.8175282166. The cubic root of 2640032 is about 138.2090230160.

Adding to 2640032 its reverse (2300462), we get a palindrome (4940494).

The spelling of 2640032 in words is "two million, six hundred forty thousand, thirty-two".