7097545728 has 792 divisors, whose sum is σ = 27330888960. Its totient is φ = 1811496960.

The previous prime is 7097545723. The next prime is 7097545739. The reversal of 7097545728 is 8275457907.

It is a happy number.

7097545728 is a `hidden beast` number, since 7 + 0 + 97 + 545 + 7 + 2 + 8 = 666.

It is a super-2 number, since 2×7097545728² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7097545723) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 228953073 + ... + 228953103.

Almost surely, 2^7097545728 is an apocalyptic number.

7097545728 is a gapful number since it is divisible by the number (78) 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 7097545728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13665444480).

7097545728 is an abundant number, since it is smaller than the sum of its proper divisors (20233343232).

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

7097545728 is a wasteful number, since it uses less digits than its factorization.

7097545728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 54.

The square root of 7097545728 is about 84246.9330480345. The cubic root of 7097545728 is about 1921.7758569582.

The spelling of 7097545728 in words is "seven billion, ninety-seven million, five hundred forty-five thousand, seven hundred twenty-eight".