7272727 has 24 divisors (see below), whose sum is σ = 9389952. Its totient is φ = 5569200.

The previous prime is 7272721. The next prime is 7272737.

It is a happy number.

7272727 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7272727 - 2⁷ = 7272599 is a prime.

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

7272727 is an undulating number in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 7272692 and 7272701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7272721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55452 + ... + 55582.

It is an arithmetic number, because the mean of its divisors is an integer number (391248).

Almost surely, 2^7272727 is an apocalyptic number.

7272727 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

7272727 is a deficient number, since it is larger than the sum of its proper divisors (2117225).

7272727 is a wasteful number, since it uses less digits than its factorization.

7272727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 252 counting only the distinct ones).

The product of its digits is 19208, while the sum is 34.

The square root of 7272727 is about 2696.7993992880. The cubic root of 7272727 is about 193.7458588085.

The spelling of 7272727 in words is "seven million, two hundred seventy-two thousand, seven hundred twenty-seven".