7130129820 has 48 divisors (see below), whose sum is σ = 21779307648. Its totient is φ = 1728516160.

The previous prime is 7130129819. The next prime is 7130129833. The reversal of 7130129820 is 289210317.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5400954 + ... + 5402273.

It is an arithmetic number, because the mean of its divisors is an integer number (453735576).

Almost surely, 2^7130129820 is an apocalyptic number.

It is an amenable number.

7130129820 is an abundant number, since it is smaller than the sum of its proper divisors (14649177828).

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

7130129820 is a wasteful number, since it uses less digits than its factorization.

7130129820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10803250 (or 10803248 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 7130129820 is about 84440.0960444740. The cubic root of 7130129820 is about 1924.7122587852.

The spelling of 7130129820 in words is "seven billion, one hundred thirty million, one hundred twenty-nine thousand, eight hundred twenty".