8278157408 has 24 divisors (see below), whose sum is σ = 16738101072. Its totient is φ = 4027211136.

The previous prime is 8278157359. The next prime is 8278157417. The reversal of 8278157408 is 8047518728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3494660 + ... + 3497027.

It is an arithmetic number, because the mean of its divisors is an integer number (697420878).

Almost surely, 2^8278157408 is an apocalyptic number.

It is an amenable number.

8278157408 is an abundant number, since it is smaller than the sum of its proper divisors (8459943664).

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

8278157408 is a wasteful number, since it uses less digits than its factorization.

8278157408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6991734 (or 6991726 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 50.

The square root of 8278157408 is about 90984.3800220675. The cubic root of 8278157408 is about 2022.9162049014.

The spelling of 8278157408 in words is "eight billion, two hundred seventy-eight million, one hundred fifty-seven thousand, four hundred eight".