727867828 has 6 divisors (see below), whose sum is σ = 1273768706. Its totient is φ = 363933912.

The previous prime is 727867823. The next prime is 727867841. The reversal of 727867828 is 828768727.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 398880784 + 328987044 = 19972^2 + 18138^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727867823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90983475 + ... + 90983482.

Almost surely, 2^727867828 is an apocalyptic number.

It is an amenable number.

727867828 is a deficient number, since it is larger than the sum of its proper divisors (545900878).

727867828 is a wasteful number, since it uses less digits than its factorization.

727867828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181966961 (or 181966959 counting only the distinct ones).

The product of its digits is 4214784, while the sum is 55.

The square root of 727867828 is about 26979.0257051659. The cubic root of 727867828 is about 899.5338441926.

The spelling of 727867828 in words is "seven hundred twenty-seven million, eight hundred sixty-seven thousand, eight hundred twenty-eight".