7228291 has 4 divisors (see below), whose sum is σ = 8260912. Its totient is φ = 6195672.

The previous prime is 7228253. The next prime is 7228321. The reversal of 7228291 is 1928227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1928227 = 7 ⋅275461.

It is not a de Polignac number, because 7228291 - 2¹⁵ = 7195523 is a prime.

It is a Duffinian number.

7228291 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7228201) 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, 516300 + ... + 516313.

It is an arithmetic number, because the mean of its divisors is an integer number (2065228).

Almost surely, 2^7228291 is an apocalyptic number.

7228291 is a deficient number, since it is larger than the sum of its proper divisors (1032621).

7228291 is a wasteful number, since it uses less digits than its factorization.

7228291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032620.

The product of its digits is 4032, while the sum is 31.

The square root of 7228291 is about 2688.5481211985. The cubic root of 7228291 is about 193.3504599044.

The spelling of 7228291 in words is "seven million, two hundred twenty-eight thousand, two hundred ninety-one".