1478645280 has 336 divisors, whose sum is σ = 5989080384. Its totient is φ = 337789440.

The previous prime is 1478645263. The next prime is 1478645281. The reversal of 1478645280 is 825468741.

1478645280 is a `hidden beast` number, since 1 + 47 + 86 + 4 + 528 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1478645281) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 815575 + ... + 817385.

It is an arithmetic number, because the mean of its divisors is an integer number (17824644).

Almost surely, 2^1478645280 is an apocalyptic number.

1478645280 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 1478645280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2994540192).

1478645280 is an abundant number, since it is smaller than the sum of its proper divisors (4510435104).

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

1478645280 is an equidigital number, since it uses as much as digits as its factorization.

1478645280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 1478645280 is about 38453.1569575243. The cubic root of 1478645280 is about 1139.2560242747.

The spelling of 1478645280 in words is "one billion, four hundred seventy-eight million, six hundred forty-five thousand, two hundred eighty".