1478419440 has 80 divisors (see below), whose sum is σ = 4596134400. Its totient is φ = 393124096.

The previous prime is 1478419379. The next prime is 1478419483. The reversal of 1478419440 is 449148741.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1478419392 and 1478419401.

It is a congruent number.

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, 77581 + ... + 94739.

It is an arithmetic number, because the mean of its divisors is an integer number (57451680).

Almost surely, 2^1478419440 is an apocalyptic number.

1478419440 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 1478419440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298067200).

1478419440 is an abundant number, since it is smaller than the sum of its proper divisors (3117714960).

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

1478419440 is a wasteful number, since it uses less digits than its factorization.

1478419440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17534 (or 17528 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1478419440 is about 38450.2202854548. The cubic root of 1478419440 is about 1139.1980201263.

The spelling of 1478419440 in words is "one billion, four hundred seventy-eight million, four hundred nineteen thousand, four hundred forty".