30928119 has 16 divisors (see below), whose sum is σ = 42092544. Its totient is φ = 20196000.

The previous prime is 30928103. The next prime is 30928127. The reversal of 30928119 is 91182903.

It is not a de Polignac number, because 30928119 - 2⁴ = 30928103 is a prime.

It is a super-2 number, since 2×30928119² = 1913097089756322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30928119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30928199) 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, 30714 + ... + 31704.

It is an arithmetic number, because the mean of its divisors is an integer number (2630784).

Almost surely, 2^30928119 is an apocalyptic number.

30928119 is the 2973-rd nonagonal number.

30928119 is a deficient number, since it is larger than the sum of its proper divisors (11164425).

30928119 is a wasteful number, since it uses less digits than its factorization.

30928119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 30928119 is about 5561.3055121977. The cubic root of 30928119 is about 313.8950756304.

It can be divided in two parts, 3092 and 8119, that added together give a palindrome (11211).

The spelling of 30928119 in words is "thirty million, nine hundred twenty-eight thousand, one hundred nineteen".