724540222 has 32 divisors (see below), whose sum is σ = 1257315840. Its totient is φ = 306724320.

The previous prime is 724540177. The next prime is 724540241. The reversal of 724540222 is 222045427.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748783 + ... + 749749.

It is an arithmetic number, because the mean of its divisors is an integer number (39291120).

Almost surely, 2^724540222 is an apocalyptic number.

724540222 is a deficient number, since it is larger than the sum of its proper divisors (532775618).

724540222 is a wasteful number, since it uses less digits than its factorization.

724540222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576.

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 724540222 is about 26917.2848184953. The cubic root of 724540222 is about 898.1609450566.

Adding to 724540222 its reverse (222045427), we get a palindrome (946585649).

The spelling of 724540222 in words is "seven hundred twenty-four million, five hundred forty thousand, two hundred twenty-two".