30442893 has 8 divisors (see below), whose sum is σ = 43712928. Its totient is φ = 18734064.

The previous prime is 30442889. The next prime is 30442901. The reversal of 30442893 is 39824403.

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

It is not a de Polignac number, because 30442893 - 2² = 30442889 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30442813) 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, 390255 + ... + 390332.

It is an arithmetic number, because the mean of its divisors is an integer number (5464116).

Almost surely, 2^30442893 is an apocalyptic number.

It is an amenable number.

30442893 is a deficient number, since it is larger than the sum of its proper divisors (13270035).

30442893 is a wasteful number, since it uses less digits than its factorization.

30442893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780603.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 30442893 is about 5517.5078613446. The cubic root of 30442893 is about 312.2448665321.

The spelling of 30442893 in words is "thirty million, four hundred forty-two thousand, eight hundred ninety-three".