2451401240 has 16 divisors (see below), whose sum is σ = 5515652880. Its totient is φ = 980560480.

The previous prime is 2451401213. The next prime is 2451401257. The reversal of 2451401240 is 421041542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30642476 + ... + 30642555.

It is an arithmetic number, because the mean of its divisors is an integer number (344728305).

Almost surely, 2^2451401240 is an apocalyptic number.

2451401240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2451401240 is an abundant number, since it is smaller than the sum of its proper divisors (3064251640).

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

2451401240 is a wasteful number, since it uses less digits than its factorization.

2451401240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61285042 (or 61285038 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2451401240 is about 49511.6273212667. The cubic root of 2451401240 is about 1348.3567092454.

Adding to 2451401240 its reverse (421041542), we get a palindrome (2872442782).

The spelling of 2451401240 in words is "two billion, four hundred fifty-one million, four hundred one thousand, two hundred forty".