7292778016 has 24 divisors (see below), whose sum is σ = 14852750220. Its totient is φ = 3520651008.

The previous prime is 7292778007. The next prime is 7292778049. The reversal of 7292778016 is 6108772927.

It can be written as a sum of positive squares in 2 ways, for example, as 6367401616 + 925376400 = 79796^2 + 30420^2 .

It is a super-2 number, since 2×7292778016² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 3928371 + ... + 3930226.

Almost surely, 2^7292778016 is an apocalyptic number.

It is an amenable number.

7292778016 is an abundant number, since it is smaller than the sum of its proper divisors (7559972204).

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

7292778016 is a wasteful number, since it uses less digits than its factorization.

7292778016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7858636 (or 7858628 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 7292778016 is about 85397.7635304344. The cubic root of 7292778016 is about 1939.2374882696.

The spelling of 7292778016 in words is "seven billion, two hundred ninety-two million, seven hundred seventy-eight thousand, sixteen".