30928649466990 has 32 divisors (see below), whose sum is σ = 80976827696256. Its totient is φ = 7497854416160.

The previous prime is 30928649466977. The next prime is 30928649466997. The reversal of 30928649466990 is 9966494682903.

It is a super-2 number, since 2×30928649466990² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30928649466997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46861589772 + ... + 46861590431.

It is an arithmetic number, because the mean of its divisors is an integer number (2530525865508).

Almost surely, 2^{30928649466990} is an apocalyptic number.

30928649466990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30928649466990 is an abundant number, since it is smaller than the sum of its proper divisors (50048178229266).

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

30928649466990 is a wasteful number, since it uses less digits than its factorization.

30928649466990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93723180224.

The product of its (nonzero) digits is 1088391168, while the sum is 75.

The spelling of 30928649466990 in words is "thirty trillion, nine hundred twenty-eight billion, six hundred forty-nine million, four hundred sixty-six thousand, nine hundred ninety".