7222845 has 48 divisors (see below), whose sum is σ = 13920768. Its totient is φ = 3185280.

The previous prime is 7222823. The next prime is 7222849. The reversal of 7222845 is 5482227.

It is not a de Polignac number, because 7222845 - 2⁶ = 7222781 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222849) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22627 + ... + 22943.

It is an arithmetic number, because the mean of its divisors is an integer number (290016).

Almost surely, 2^7222845 is an apocalyptic number.

It is an amenable number.

7222845 is a deficient number, since it is larger than the sum of its proper divisors (6697923).

7222845 is a wasteful number, since it uses less digits than its factorization.

7222845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 363 counting only the distinct ones).

The product of its digits is 8960, while the sum is 30.

The square root of 7222845 is about 2687.5351160496. The cubic root of 7222845 is about 193.3018891258.

The spelling of 7222845 in words is "seven million, two hundred twenty-two thousand, eight hundred forty-five".