7280226 has 32 divisors (see below), whose sum is σ = 16704000. Its totient is φ = 2347920.

The previous prime is 7280197. The next prime is 7280263. The reversal of 7280226 is 6220827.

It is a super-2 number, since 2×7280226² = 106003381222152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 7280226.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501 + ... + 3848.

It is an arithmetic number, because the mean of its divisors is an integer number (522000).

Almost surely, 2^7280226 is an apocalyptic number.

7280226 is an abundant number, since it is smaller than the sum of its proper divisors (9423774).

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

7280226 is a wasteful number, since it uses less digits than its factorization.

7280226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391 (or 4385 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 7280226 is about 2698.1893929078. The cubic root of 7280226 is about 193.8124271953.

The spelling of 7280226 in words is "seven million, two hundred eighty thousand, two hundred twenty-six".