2152454040 has 128 divisors (see below), whose sum is σ = 7827148800. Its totient is φ = 521804160.

The previous prime is 2152453981. The next prime is 2152454069. The reversal of 2152454040 is 404542512.

2152454040 is a `hidden beast` number, since 2 + 15 + 245 + 404 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2152453995 and 2152454013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78712 + ... + 102471.

It is an arithmetic number, because the mean of its divisors is an integer number (61149600).

Almost surely, 2^2152454040 is an apocalyptic number.

2152454040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2152454040 is an abundant number, since it is smaller than the sum of its proper divisors (5674694760).

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

2152454040 is a wasteful number, since it uses less digits than its factorization.

2152454040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181214 (or 181204 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2152454040 is about 46394.5475244667. The cubic root of 2152454040 is about 1291.1537541652.

Adding to 2152454040 its reverse (404542512), we get a palindrome (2556996552).

The spelling of 2152454040 in words is "two billion, one hundred fifty-two million, four hundred fifty-four thousand, forty".