727638051 has 16 divisors (see below), whose sum is σ = 1156990464. Its totient is φ = 397714944.

The previous prime is 727638019. The next prime is 727638071. The reversal of 727638051 is 150836727.

727638051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 727638051 - 2⁵ = 727638019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (727638071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 752766 + ... + 753731.

It is an arithmetic number, because the mean of its divisors is an integer number (72311904).

Almost surely, 2^727638051 is an apocalyptic number.

727638051 is a deficient number, since it is larger than the sum of its proper divisors (429352413).

727638051 is a wasteful number, since it uses less digits than its factorization.

727638051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506530.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 727638051 is about 26974.7669313379. The cubic root of 727638051 is about 899.4391777647.

The spelling of 727638051 in words is "seven hundred twenty-seven million, six hundred thirty-eight thousand, fifty-one".