1478009287272 has 192 divisors, whose sum is σ = 4477999680000. Its totient is φ = 398163185280.

The previous prime is 1478009287247. The next prime is 1478009287393. The reversal of 1478009287272 is 2727829008741.

It is a super-2 number, since 2×1478009287272² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12738979 + ... + 12854477.

It is an arithmetic number, because the mean of its divisors is an integer number (23322915000).

Almost surely, 2^{1478009287272} is an apocalyptic number.

1478009287272 is a gapful number since it is divisible by the number (12) 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 1478009287272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2238999840000).

1478009287272 is an abundant number, since it is smaller than the sum of its proper divisors (2999990392728).

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

1478009287272 is a wasteful number, since it uses less digits than its factorization.

1478009287272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115764 (or 115741 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 57.

The spelling of 1478009287272 in words is "one trillion, four hundred seventy-eight billion, nine million, two hundred eighty-seven thousand, two hundred seventy-two".