7280947872 has 192 divisors, whose sum is σ = 23966409600. Its totient is φ = 2130186240.

The previous prime is 7280947847. The next prime is 7280947889. The reversal of 7280947872 is 2787490827.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 262408 + ... + 288824.

It is an arithmetic number, because the mean of its divisors is an integer number (124825050).

Almost surely, 2^7280947872 is an apocalyptic number.

7280947872 is a gapful number since it is divisible by the number (72) 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 7280947872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11983204800).

7280947872 is an abundant number, since it is smaller than the sum of its proper divisors (16685461728).

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

7280947872 is a wasteful number, since it uses less digits than its factorization.

7280947872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26476 (or 26462 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The square root of 7280947872 is about 85328.4704656072. The cubic root of 7280947872 is about 1938.1883281792.

The spelling of 7280947872 in words is "seven billion, two hundred eighty million, nine hundred forty-seven thousand, eight hundred seventy-two".