7209349056 has 672 divisors, whose sum is σ = 27747041280. Its totient is φ = 1787111424.

The previous prime is 7209349039. The next prime is 7209349067. The reversal of 7209349056 is 6509439027.

It is a happy number.

7209349056 is a `hidden beast` number, since 7 + 20 + 93 + 490 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×7209349056² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 56766465 + ... + 56766591.

It is an arithmetic number, because the mean of its divisors is an integer number (41290240).

Almost surely, 2^7209349056 is an apocalyptic number.

7209349056 is a gapful number since it is divisible by the number (76) 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 7209349056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13873520640).

7209349056 is an abundant number, since it is smaller than the sum of its proper divisors (20537692224).

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

7209349056 is a wasteful number, since it uses less digits than its factorization.

7209349056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 7209349056 is about 84907.8857115168. The cubic root of 7209349056 is about 1931.8141868286.

The spelling of 7209349056 in words is "seven billion, two hundred nine million, three hundred forty-nine thousand, fifty-six".