7272845 has 4 divisors (see below), whose sum is σ = 8727420. Its totient is φ = 5818272.

The previous prime is 7272841. The next prime is 7272869. The reversal of 7272845 is 5482727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5482727 = 373 ⋅14699.

It can be written as a sum of positive squares in 2 ways, for example, as 4072324 + 3200521 = 2018^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 7272845 - 2² = 7272841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7272841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727280 + ... + 727289.

It is an arithmetic number, because the mean of its divisors is an integer number (2181855).

Almost surely, 2^7272845 is an apocalyptic number.

It is an amenable number.

7272845 is a deficient number, since it is larger than the sum of its proper divisors (1454575).

7272845 is a wasteful number, since it uses less digits than its factorization.

7272845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454574.

The product of its digits is 31360, while the sum is 35.

The square root of 7272845 is about 2696.8212769852. The cubic root of 7272845 is about 193.7469066450.

The spelling of 7272845 in words is "seven million, two hundred seventy-two thousand, eight hundred forty-five".