7273538 has 4 divisors (see below), whose sum is σ = 10910310. Its totient is φ = 3636768.

The previous prime is 7273529. The next prime is 7273547. The reversal of 7273538 is 8353727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8353727 = 1613 ⋅5179.

It is an interprime number because it is at equal distance from previous prime (7273529) and next prime (7273547).

It can be written as a sum of positive squares in only one way, i.e., 3972049 + 3301489 = 1993^2 + 1817^2 .

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 7273498 and 7273507.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1818383 + ... + 1818386.

Almost surely, 2^7273538 is an apocalyptic number.

7273538 is a deficient number, since it is larger than the sum of its proper divisors (3636772).

7273538 is a wasteful number, since it uses less digits than its factorization.

7273538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3636771.

The product of its digits is 35280, while the sum is 35.

The square root of 7273538 is about 2696.9497585235. The cubic root of 7273538 is about 193.7530602361.

The spelling of 7273538 in words is "seven million, two hundred seventy-three thousand, five hundred thirty-eight".