7128190 has 8 divisors (see below), whose sum is σ = 12830760. Its totient is φ = 2851272.

The previous prime is 7128181. The next prime is 7128193. The reversal of 7128190 is 918217.

7128190 = 1192² + 1193² + ... + 1196².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7128190² = 101622185352200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7128193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356400 + ... + 356419.

It is an arithmetic number, because the mean of its divisors is an integer number (1603845).

Almost surely, 2^7128190 is an apocalyptic number.

7128190 is a deficient number, since it is larger than the sum of its proper divisors (5702570).

7128190 is a wasteful number, since it uses less digits than its factorization.

7128190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712826.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 7128190 is about 2669.8670378878. The cubic root of 7128190 is about 192.4537697495.

The spelling of 7128190 in words is "seven million, one hundred twenty-eight thousand, one hundred ninety".