7294881312 has 144 divisors (see below), whose sum is σ = 21542347008. Its totient is φ = 2339089920.

The previous prime is 7294881311. The next prime is 7294881323. The reversal of 7294881312 is 2131884927.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (7294881311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1542183 + ... + 1546905.

It is an arithmetic number, because the mean of its divisors is an integer number (149599632).

Almost surely, 2^7294881312 is an apocalyptic number.

7294881312 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 7294881312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10771173504).

7294881312 is an abundant number, since it is smaller than the sum of its proper divisors (14247465696).

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

7294881312 is a wasteful number, since it uses less digits than its factorization.

7294881312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943 (or 4932 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 7294881312 is about 85410.0773445382. The cubic root of 7294881312 is about 1939.4239009274.

The spelling of 7294881312 in words is "seven billion, two hundred ninety-four million, eight hundred eighty-one thousand, three hundred twelve".