7872815376 has 120 divisors (see below), whose sum is σ = 23406240000. Its totient is φ = 2463250176.

The previous prime is 7872815299. The next prime is 7872815381. The reversal of 7872815376 is 6735182787.

7872815376 is a `hidden beast` number, since 7 + 87 + 28 + 1 + 537 + 6 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285025 + ... + 311423.

It is an arithmetic number, because the mean of its divisors is an integer number (195052000).

Almost surely, 2^7872815376 is an apocalyptic number.

7872815376 is a gapful number since it is divisible by the number (76) 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 7872815376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11703120000).

7872815376 is an abundant number, since it is smaller than the sum of its proper divisors (15533424624).

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

7872815376 is a wasteful number, since it uses less digits than its factorization.

7872815376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26541 (or 26532 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 54.

The square root of 7872815376 is about 88728.8869309201. The cubic root of 7872815376 is about 1989.3446135181.

The spelling of 7872815376 in words is "seven billion, eight hundred seventy-two million, eight hundred fifteen thousand, three hundred seventy-six".