920929621828 has 12 divisors (see below), whose sum is σ = 1613243321452. Its totient is φ = 460002958560.

The previous prime is 920929621789. The next prime is 920929621847. The reversal of 920929621828 is 828126929029.

It can be written as a sum of positive squares in 2 ways, for example, as 657409612864 + 263520008964 = 810808^2 + 513342^2 .

It is a super-2 number, since 2×920929621828² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115458603 + ... + 115466578.

Almost surely, 2^920929621828 is an apocalyptic number.

It is an amenable number.

920929621828 is a deficient number, since it is larger than the sum of its proper divisors (692313699624).

920929621828 is a wasteful number, since it uses less digits than its factorization.

920929621828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230926182 (or 230926180 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 58.

The spelling of 920929621828 in words is "nine hundred twenty billion, nine hundred twenty-nine million, six hundred twenty-one thousand, eight hundred twenty-eight".