30642406 has 8 divisors (see below), whose sum is σ = 45993024. Its totient is φ = 15311400.

The previous prime is 30642377. The next prime is 30642413. The reversal of 30642406 is 60424603.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25 + ... + 7828.

It is an arithmetic number, because the mean of its divisors is an integer number (5749128).

Almost surely, 2^30642406 is an apocalyptic number.

30642406 is a deficient number, since it is larger than the sum of its proper divisors (15350618).

30642406 is a wasteful number, since it uses less digits than its factorization.

30642406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9806.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 30642406 is about 5535.5583277570. The cubic root of 30642406 is about 312.9254995242.

The spelling of 30642406 in words is "thirty million, six hundred forty-two thousand, four hundred six".