7220356 has 36 divisors (see below), whose sum is σ = 14941584. Its totient is φ = 3026400.

The previous prime is 7220347. The next prime is 7220371. The reversal of 7220356 is 6530227.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7220356.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6951 + ... + 7921.

It is an arithmetic number, because the mean of its divisors is an integer number (415044).

Almost surely, 2^7220356 is an apocalyptic number.

It is an amenable number.

7220356 is an abundant number, since it is smaller than the sum of its proper divisors (7721228).

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

7220356 is a wasteful number, since it uses less digits than its factorization.

7220356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 7220356 is about 2687.0720124329. The cubic root of 7220356 is about 193.2796825632.

The spelling of 7220356 in words is "seven million, two hundred twenty thousand, three hundred fifty-six".