1478606840 has 64 divisors (see below), whose sum is σ = 3436214400. Its totient is φ = 572290048.

The previous prime is 1478606813. The next prime is 1478606849. The reversal of 1478606840 is 486068741.

It is a junction number, because it is equal to n+sod(n) for n = 1478606791 and 1478606800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1478606849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162902 + ... + 171738.

It is an arithmetic number, because the mean of its divisors is an integer number (53690850).

Almost surely, 2^1478606840 is an apocalyptic number.

1478606840 is a gapful number since it is divisible by the number (10) 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 1478606840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1718107200).

1478606840 is an abundant number, since it is smaller than the sum of its proper divisors (1957607560).

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

1478606840 is a wasteful number, since it uses less digits than its factorization.

1478606840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8984 (or 8980 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 1478606840 is about 38452.6571253535. The cubic root of 1478606840 is about 1139.2461518639.

The spelling of 1478606840 in words is "one billion, four hundred seventy-eight million, six hundred six thousand, eight hundred forty".