1478240280 has 640 divisors, whose sum is σ = 5959008000. Its totient is φ = 324725760.

The previous prime is 1478240279. The next prime is 1478240297. The reversal of 1478240280 is 820428741.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 25054891 + ... + 25054949.

It is an arithmetic number, because the mean of its divisors is an integer number (9310950).

Almost surely, 2^1478240280 is an apocalyptic number.

1478240280 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 1478240280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2979504000).

1478240280 is an abundant number, since it is smaller than the sum of its proper divisors (4480767720).

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

1478240280 is a wasteful number, since it uses less digits than its factorization.

1478240280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 1478240280 is about 38447.8904492821. The cubic root of 1478240280 is about 1139.1520009438.

The spelling of 1478240280 in words is "one billion, four hundred seventy-eight million, two hundred forty thousand, two hundred eighty".