786401828 has 6 divisors (see below), whose sum is σ = 1376203206. Its totient is φ = 393200912.

The previous prime is 786401821. The next prime is 786401839. The reversal of 786401828 is 828104687.

It can be written as a sum of positive squares in only one way, i.e., 781873444 + 4528384 = 27962^2 + 2128^2 .

It is a super-3 number, since 3×786401828³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (786401821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98300225 + ... + 98300232.

It is an arithmetic number, because the mean of its divisors is an integer number (229367201).

Almost surely, 2^786401828 is an apocalyptic number.

It is an amenable number.

786401828 is a deficient number, since it is larger than the sum of its proper divisors (589801378).

786401828 is a wasteful number, since it uses less digits than its factorization.

786401828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196600461 (or 196600459 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 786401828 is about 28042.8569871188. The cubic root of 786401828 is about 923.0279204963.

The spelling of 786401828 in words is "seven hundred eighty-six million, four hundred one thousand, eight hundred twenty-eight".