2152840 has 32 divisors (see below), whose sum is σ = 4898880. Its totient is φ = 851392.

The previous prime is 2152837. The next prime is 2152841. The reversal of 2152840 is 482512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4029 + ... + 4531.

It is an arithmetic number, because the mean of its divisors is an integer number (153090).

2^2152840 is an apocalyptic number.

2152840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2152840 is an abundant number, since it is smaller than the sum of its proper divisors (2746040).

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

2152840 is a wasteful number, since it uses less digits than its factorization.

2152840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2152840 is about 1467.2559422268. The cubic root of 2152840 is about 129.1230922506.

It can be divided in two parts, 2152 and 840, that added together give a palindrome (2992).

The spelling of 2152840 in words is "two million, one hundred fifty-two thousand, eight hundred forty".