30693387 has 8 divisors (see below), whose sum is σ = 42030736. Its totient is φ = 19909152.

The previous prime is 30693367. The next prime is 30693409. The reversal of 30693387 is 78339603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30693387 - 2⁷ = 30693259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30693367) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 138148 + ... + 138369.

It is an arithmetic number, because the mean of its divisors is an integer number (5253842).

Almost surely, 2^30693387 is an apocalyptic number.

30693387 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

30693387 is a deficient number, since it is larger than the sum of its proper divisors (11337349).

30693387 is a wasteful number, since it uses less digits than its factorization.

30693387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276557.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 30693387 is about 5540.1612792409. The cubic root of 30693387 is about 313.0989456053.

The spelling of 30693387 in words is "thirty million, six hundred ninety-three thousand, three hundred eighty-seven".