7228481 has 4 divisors (see below), whose sum is σ = 7784532. Its totient is φ = 6672432.

The previous prime is 7228477. The next prime is 7228483. The reversal of 7228481 is 1848227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1915456 + 5313025 = 1384^2 + 2305^2 .

It is not a de Polignac number, because 7228481 - 2² = 7228477 is a prime.

It is a super-2 number, since 2×7228481² = 104501875134722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7228483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278006 + ... + 278031.

It is an arithmetic number, because the mean of its divisors is an integer number (1946133).

Almost surely, 2^7228481 is an apocalyptic number.

It is an amenable number.

7228481 is a deficient number, since it is larger than the sum of its proper divisors (556051).

7228481 is a wasteful number, since it uses less digits than its factorization.

7228481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556050.

The product of its digits is 7168, while the sum is 32.

The square root of 7228481 is about 2688.5834560229. The cubic root of 7228481 is about 193.3521540008.

The spelling of 7228481 in words is "seven million, two hundred twenty-eight thousand, four hundred eighty-one".