8478811420 has 12 divisors (see below), whose sum is σ = 17805504024. Its totient is φ = 3391524560.

The previous prime is 8478811399. The next prime is 8478811447. The reversal of 8478811420 is 241188748.

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, 211970266 + ... + 211970305.

It is an arithmetic number, because the mean of its divisors is an integer number (1483792002).

Almost surely, 2^8478811420 is an apocalyptic number.

It is an amenable number.

8478811420 is an abundant number, since it is smaller than the sum of its proper divisors (9326692604).

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

8478811420 is a wasteful number, since it uses less digits than its factorization.

8478811420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423940580 (or 423940578 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 43.

The square root of 8478811420 is about 92080.4616626133. The cubic root of 8478811420 is about 2039.1303659110.

The spelling of 8478811420 in words is "eight billion, four hundred seventy-eight million, eight hundred eleven thousand, four hundred twenty".