7145890 has 32 divisors (see below), whose sum is σ = 13653360. Its totient is φ = 2688000.

The previous prime is 7145867. The next prime is 7145917. The reversal of 7145890 is 985417.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2493241 + 4652649 = 1579^2 + 2157^2 .

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, 11590 + ... + 12190.

Almost surely, 2^7145890 is an apocalyptic number.

7145890 is a deficient number, since it is larger than the sum of its proper divisors (6507470).

7145890 is a wasteful number, since it uses less digits than its factorization.

7145890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 7145890 is about 2673.1797545246. The cubic root of 7145890 is about 192.6129319916.

The spelling of 7145890 in words is "seven million, one hundred forty-five thousand, eight hundred ninety".