7220534 has 8 divisors (see below), whose sum is σ = 10860960. Its totient is φ = 3600216.

The previous prime is 7220531. The next prime is 7220557. The reversal of 7220534 is 4350227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7220534² = 104272222490312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4094 + ... + 5585.

It is an arithmetic number, because the mean of its divisors is an integer number (1357620).

Almost surely, 2^7220534 is an apocalyptic number.

7220534 is a deficient number, since it is larger than the sum of its proper divisors (3640426).

7220534 is a wasteful number, since it uses less digits than its factorization.

7220534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10054.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 7220534 is about 2687.1051337825. The cubic root of 7220534 is about 193.2812708275.

The spelling of 7220534 in words is "seven million, two hundred twenty thousand, five hundred thirty-four".