721027412 has 12 divisors (see below), whose sum is σ = 1442054880. Its totient is φ = 309011736.

The previous prime is 721027379. The next prime is 721027429. The reversal of 721027412 is 214720127.

721027412 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 12875462 + ... + 12875517.

It is an arithmetic number, because the mean of its divisors is an integer number (120171240).

Almost surely, 2^721027412 is an apocalyptic number.

It is an amenable number.

721027412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

721027412 is a wasteful number, since it uses less digits than its factorization.

721027412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25750990 (or 25750988 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 721027412 is about 26851.9535974573. The cubic root of 721027412 is about 896.7070660448.

Adding to 721027412 its reverse (214720127), we get a palindrome (935747539).

The spelling of 721027412 in words is "seven hundred twenty-one million, twenty-seven thousand, four hundred twelve".