7128612 has 18 divisors (see below), whose sum is σ = 18019638. Its totient is φ = 2376192.

The previous prime is 7128601. The next prime is 7128617. The reversal of 7128612 is 2168217.

It can be written as a sum of positive squares in only one way, i.e., 6843456 + 285156 = 2616^2 + 534^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (7128617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 98973 + ... + 99044.

It is an arithmetic number, because the mean of its divisors is an integer number (1001091).

Almost surely, 2^7128612 is an apocalyptic number.

It is an amenable number.

7128612 is an abundant number, since it is smaller than the sum of its proper divisors (10891026).

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

7128612 is a wasteful number, since it uses less digits than its factorization.

7128612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198027 (or 198022 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 7128612 is about 2669.9460668710. The cubic root of 7128612 is about 192.4575675294.

The spelling of 7128612 in words is "seven million, one hundred twenty-eight thousand, six hundred twelve".