7275820 has 24 divisors (see below), whose sum is σ = 15944544. Its totient is φ = 2783616.

The previous prime is 7275811. The next prime is 7275823. The reversal of 7275820 is 285727.

It is not an unprimeable number, because it can be changed into a prime (7275823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7449 + ... + 8368.

It is an arithmetic number, because the mean of its divisors is an integer number (664356).

Almost surely, 2^7275820 is an apocalyptic number.

It is an amenable number.

7275820 is an abundant number, since it is smaller than the sum of its proper divisors (8668724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7275820 is a wasteful number, since it uses less digits than its factorization.

7275820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15849 (or 15847 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 7275820 is about 2697.3727958886. The cubic root of 7275820 is about 193.7733208141.

The spelling of 7275820 in words is "seven million, two hundred seventy-five thousand, eight hundred twenty".