1478635420 has 24 divisors (see below), whose sum is σ = 3124918944. Its totient is φ = 587685696.

The previous prime is 1478635381. The next prime is 1478635447. The reversal of 1478635420 is 245368741.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232312 + ... + 238591.

It is an arithmetic number, because the mean of its divisors is an integer number (130204956).

Almost surely, 2^1478635420 is an apocalyptic number.

1478635420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1478635420 is an abundant number, since it is smaller than the sum of its proper divisors (1646283524).

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

1478635420 is a wasteful number, since it uses less digits than its factorization.

1478635420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471069 (or 471067 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 1478635420 is about 38453.0287493716. The cubic root of 1478635420 is about 1139.2534919817.

The spelling of 1478635420 in words is "one billion, four hundred seventy-eight million, six hundred thirty-five thousand, four hundred twenty".