2520415878 has 64 divisors (see below), whose sum is σ = 5351270400. Its totient is φ = 790099200.

The previous prime is 2520415853. The next prime is 2520415879. The reversal of 2520415878 is 8785140252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520415879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2661001 + ... + 2661947.

It is an arithmetic number, because the mean of its divisors is an integer number (83613600).

Almost surely, 2^2520415878 is an apocalyptic number.

2520415878 is an abundant number, since it is smaller than the sum of its proper divisors (2830854522).

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

2520415878 is a wasteful number, since it uses less digits than its factorization.

2520415878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373.

The product of its (nonzero) digits is 179200, while the sum is 42.

The square root of 2520415878 is about 50203.7436651890. The cubic root of 2520415878 is about 1360.8932781265.

The spelling of 2520415878 in words is "two billion, five hundred twenty million, four hundred fifteen thousand, eight hundred seventy-eight".