2499878520 has 96 divisors (see below), whose sum is σ = 8134373520. Its totient is φ = 665832960.

The previous prime is 2499878489. The next prime is 2499878551. The reversal of 2499878520 is 258789942.

2499878520 is a `hidden beast` number, since 2 + 49 + 9 + 8 + 78 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (2499878489) and next prime (2499878551).

It is a super-2 number, since 2×2499878520² = 12498785229514780800, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 333615 + ... + 341025.

Almost surely, 2^2499878520 is an apocalyptic number.

2499878520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2499878520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4067186760).

2499878520 is an abundant number, since it is smaller than the sum of its proper divisors (5634495000).

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

2499878520 is a wasteful number, since it uses less digits than its factorization.

2499878520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8365 (or 8358 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 2499878520 is about 49998.7851852423. The cubic root of 2499878520 is about 1357.1868247779.

The spelling of 2499878520 in words is "two billion, four hundred ninety-nine million, eight hundred seventy-eight thousand, five hundred twenty".