7275405 has 32 divisors (see below), whose sum is σ = 12489984. Its totient is φ = 3603456.

The previous prime is 7275403. The next prime is 7275427. The reversal of 7275405 is 5045727.

It is not a de Polignac number, because 7275405 - 2¹ = 7275403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7275403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26127 + ... + 26403.

It is an arithmetic number, because the mean of its divisors is an integer number (390312).

Almost surely, 2^7275405 is an apocalyptic number.

It is an amenable number.

7275405 is a deficient number, since it is larger than the sum of its proper divisors (5214579).

7275405 is a wasteful number, since it uses less digits than its factorization.

7275405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 7275405 is about 2697.2958680871. The cubic root of 7275405 is about 193.7696365807.

The spelling of 7275405 in words is "seven million, two hundred seventy-five thousand, four hundred five".