7230145 has 16 divisors (see below), whose sum is σ = 9574992. Its totient is φ = 5207040.

The previous prime is 7230137. The next prime is 7230163. The reversal of 7230145 is 5410327.

It can be written as a sum of positive squares in 8 ways, for example, as 323761 + 6906384 = 569^2 + 2628^2 .

It is not a de Polignac number, because 7230145 - 2³ = 7230137 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1309 + ... + 4021.

It is an arithmetic number, because the mean of its divisors is an integer number (598437).

Almost surely, 2^7230145 is an apocalyptic number.

It is an amenable number.

7230145 is a deficient number, since it is larger than the sum of its proper divisors (2344847).

7230145 is a wasteful number, since it uses less digits than its factorization.

7230145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 7230145 is about 2688.8928948547. The cubic root of 7230145 is about 193.3669894505.

The spelling of 7230145 in words is "seven million, two hundred thirty thousand, one hundred forty-five".