7273745 has 8 divisors (see below), whose sum is σ = 8747880. Its totient is φ = 5806080.

The previous prime is 7273723. The next prime is 7273759. The reversal of 7273745 is 5473727.

It can be written as a sum of positive squares in 4 ways, for example, as 5329 + 7268416 = 73^2 + 2696^2 .

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

It is not a de Polignac number, because 7273745 - 2⁸ = 7273489 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1361 + ... + 4049.

It is an arithmetic number, because the mean of its divisors is an integer number (1093485).

Almost surely, 2^7273745 is an apocalyptic number.

It is an amenable number.

7273745 is a deficient number, since it is larger than the sum of its proper divisors (1474135).

7273745 is a wasteful number, since it uses less digits than its factorization.

7273745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3235.

The product of its digits is 41160, while the sum is 35.

The square root of 7273745 is about 2696.9881349387. The cubic root of 7273745 is about 193.7548982459.

The spelling of 7273745 in words is "seven million, two hundred seventy-three thousand, seven hundred forty-five".