8015868420 has 48 divisors (see below), whose sum is σ = 25650780288. Its totient is φ = 1832198400.

The previous prime is 8015868361. The next prime is 8015868433. The reversal of 8015868420 is 248685108.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9542281 + ... + 9543120.

It is an arithmetic number, because the mean of its divisors is an integer number (534391256).

Almost surely, 2^8015868420 is an apocalyptic number.

It is an amenable number.

8015868420 is an abundant number, since it is smaller than the sum of its proper divisors (17634911868).

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

8015868420 is a wasteful number, since it uses less digits than its factorization.

8015868420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19085420 (or 19085418 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 8015868420 is about 89531.3823192739. The cubic root of 8015868420 is about 2001.3214949665.

The spelling of 8015868420 in words is "eight billion, fifteen million, eight hundred sixty-eight thousand, four hundred twenty".