30814215 has 16 divisors (see below), whose sum is σ = 49660800. Its totient is φ = 16314912.

The previous prime is 30814207. The next prime is 30814237. The reversal of 30814215 is 51241803.

It is not a de Polignac number, because 30814215 - 2³ = 30814207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5305 + ... + 9474.

It is an arithmetic number, because the mean of its divisors is an integer number (3103800).

Almost surely, 2^30814215 is an apocalyptic number.

30814215 is a deficient number, since it is larger than the sum of its proper divisors (18846585).

30814215 is a wasteful number, since it uses less digits than its factorization.

30814215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14926.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 30814215 is about 5551.0553050749. The cubic root of 30814215 is about 313.5092575021.

Adding to 30814215 its product of nonzero digits (960), we get a triangular number (30815175 = T₇₈₅₀).

The spelling of 30814215 in words is "thirty million, eight hundred fourteen thousand, two hundred fifteen".