7276405 has 8 divisors (see below), whose sum is σ = 8746200. Its totient is φ = 5811456.

The previous prime is 7276403. The next prime is 7276427. The reversal of 7276405 is 5046727.

It can be written as a sum of positive squares in 4 ways, for example, as 427716 + 6848689 = 654^2 + 2617^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7276405 - 2¹ = 7276403 is a prime.

7276405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7276403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5001 + ... + 6289.

It is an arithmetic number, because the mean of its divisors is an integer number (1093275).

Almost surely, 2^7276405 is an apocalyptic number.

It is an amenable number.

7276405 is a deficient number, since it is larger than the sum of its proper divisors (1469795).

7276405 is a wasteful number, since it uses less digits than its factorization.

7276405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 7276405 is about 2697.4812325575. The cubic root of 7276405 is about 193.7785140136.

The spelling of 7276405 in words is "seven million, two hundred seventy-six thousand, four hundred five".