30782109 has 24 divisors (see below), whose sum is σ = 44391072. Its totient is φ = 18960480.

The previous prime is 30782107. The next prime is 30782117. The reversal of 30782109 is 90128703.

It is a happy number.

It is not a de Polignac number, because 30782109 - 2¹ = 30782107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30782107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46239 + ... + 46899.

It is an arithmetic number, because the mean of its divisors is an integer number (1849628).

Almost surely, 2^30782109 is an apocalyptic number.

It is an amenable number.

30782109 is a deficient number, since it is larger than the sum of its proper divisors (13608963).

30782109 is a wasteful number, since it uses less digits than its factorization.

30782109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 30782109 is about 5548.1626688481. The cubic root of 30782109 is about 313.4003356286.

The spelling of 30782109 in words is "thirty million, seven hundred eighty-two thousand, one hundred nine".