727922420 has 24 divisors (see below), whose sum is σ = 1549580424. Its totient is φ = 287179776.

The previous prime is 727922413. The next prime is 727922441. The reversal of 727922420 is 24229727.

It can be written as a sum of positive squares in 4 ways, for example, as 217975696 + 509946724 = 14764^2 + 22582^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 247829 + ... + 250748.

It is an arithmetic number, because the mean of its divisors is an integer number (64565851).

Almost surely, 2^727922420 is an apocalyptic number.

It is an amenable number.

727922420 is an abundant number, since it is smaller than the sum of its proper divisors (821658004).

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

727922420 is a wasteful number, since it uses less digits than its factorization.

727922420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498659 (or 498657 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 727922420 is about 26980.0374351112. The cubic root of 727922420 is about 899.5563327645.

The spelling of 727922420 in words is "seven hundred twenty-seven million, nine hundred twenty-two thousand, four hundred twenty".