7290016578 has 128 divisors (see below), whose sum is σ = 18111340800. Its totient is φ = 2158119936.

The previous prime is 7290016541. The next prime is 7290016621. The reversal of 7290016578 is 8756100927.

7290016578 is a `hidden beast` number, since 72 + 9 + 0 + 0 + 1 + 6 + 578 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8814601 + ... + 8815427.

It is an arithmetic number, because the mean of its divisors is an integer number (141494850).

Almost surely, 2^7290016578 is an apocalyptic number.

7290016578 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7290016578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9055670400).

7290016578 is an abundant number, since it is smaller than the sum of its proper divisors (10821324222).

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

7290016578 is a wasteful number, since it uses less digits than its factorization.

7290016578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 7290016578 is about 85381.5939064152. The cubic root of 7290016578 is about 1938.9926908308.

The spelling of 7290016578 in words is "seven billion, two hundred ninety million, sixteen thousand, five hundred seventy-eight".