30768870 has 32 divisors (see below), whose sum is σ = 80559360. Its totient is φ = 7459040.

The previous prime is 30768869. The next prime is 30768877. The reversal of 30768870 is 7886703.

It is a super-2 number, since 2×30768870² = 1893446722153800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30768877) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 46290 + ... + 46949.

It is an arithmetic number, because the mean of its divisors is an integer number (2517480).

Almost surely, 2^30768870 is an apocalyptic number.

30768870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30768870 is an abundant number, since it is smaller than the sum of its proper divisors (49790490).

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

30768870 is a wasteful number, since it uses less digits than its factorization.

30768870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93260.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 30768870 is about 5546.9694428580. The cubic root of 30768870 is about 313.3553993313.

The spelling of 30768870 in words is "thirty million, seven hundred sixty-eight thousand, eight hundred seventy".