727421387 has 12 divisors (see below), whose sum is σ = 913786608. Its totient is φ = 566821200.

The previous prime is 727421377. The next prime is 727421389. The reversal of 727421387 is 783124727.

It is not a de Polignac number, because 727421387 - 2⁶ = 727421323 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (727421389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 428564 + ... + 430257.

It is an arithmetic number, because the mean of its divisors is an integer number (76148884).

Almost surely, 2^727421387 is an apocalyptic number.

727421387 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

727421387 is a deficient number, since it is larger than the sum of its proper divisors (186365221).

727421387 is a wasteful number, since it uses less digits than its factorization.

727421387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858850 (or 858839 counting only the distinct ones).

The product of its digits is 131712, while the sum is 41.

The square root of 727421387 is about 26970.7505828073. The cubic root of 727421387 is about 899.3498955383.

The spelling of 727421387 in words is "seven hundred twenty-seven million, four hundred twenty-one thousand, three hundred eighty-seven".