7295271820 has 24 divisors (see below), whose sum is σ = 15571222128. Its totient is φ = 2870270400.

The previous prime is 7295271817. The next prime is 7295271821. The reversal of 7295271820 is 281725927.

It is a super-2 number, since 2×7295271820² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7295271821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2988646 + ... + 2991085.

It is an arithmetic number, because the mean of its divisors is an integer number (648800922).

Almost surely, 2^7295271820 is an apocalyptic number.

It is an amenable number.

7295271820 is an abundant number, since it is smaller than the sum of its proper divisors (8275950308).

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

7295271820 is a wasteful number, since it uses less digits than its factorization.

7295271820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5979801 (or 5979799 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 7295271820 is about 85412.3633907879. The cubic root of 7295271820 is about 1939.4585072494.

The spelling of 7295271820 in words is "seven billion, two hundred ninety-five million, two hundred seventy-one thousand, eight hundred twenty".