7261497288 has 128 divisors (see below), whose sum is σ = 20987904000. Its totient is φ = 2323702080.

The previous prime is 7261497241. The next prime is 7261497307. The reversal of 7261497288 is 8827941627.

It is a happy number.

7261497288 is a `hidden beast` number, since 72 + 6 + 1 + 497 + 2 + 88 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 846123 + ... + 854661.

It is an arithmetic number, because the mean of its divisors is an integer number (163968000).

Almost surely, 2^7261497288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7261497288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10493952000).

7261497288 is an abundant number, since it is smaller than the sum of its proper divisors (13726406712).

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

7261497288 is a wasteful number, since it uses less digits than its factorization.

7261497288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8712 (or 8702 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 7261497288 is about 85214.4194840286. The cubic root of 7261497288 is about 1936.4608738460.

The spelling of 7261497288 in words is "seven billion, two hundred sixty-one million, four hundred ninety-seven thousand, two hundred eighty-eight".