7212730 has 32 divisors (see below), whose sum is σ = 14950656. Its totient is φ = 2454144.

The previous prime is 7212727. The next prime is 7212757. The reversal of 7212730 is 372127.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11382 + ... + 11998.

It is an arithmetic number, because the mean of its divisors is an integer number (467208).

Almost surely, 2^7212730 is an apocalyptic number.

7212730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7212730 is an abundant number, since it is smaller than the sum of its proper divisors (7737926).

7212730 is a wasteful number, since it uses less digits than its factorization.

7212730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 7212730 is about 2685.6526208726. The cubic root of 7212730 is about 193.2116125085.

Adding to 7212730 its reverse (372127), we get a palindrome (7584857).

The spelling of 7212730 in words is "seven million, two hundred twelve thousand, seven hundred thirty".