30390547 has 4 divisors (see below), whose sum is σ = 33153336. Its totient is φ = 27627760.

The previous prime is 30390539. The next prime is 30390629. The reversal of 30390547 is 74509303.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30390547 - 2³ = 30390539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30390517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381378 + ... + 1381399.

It is an arithmetic number, because the mean of its divisors is an integer number (8288334).

Almost surely, 2^30390547 is an apocalyptic number.

30390547 is a deficient number, since it is larger than the sum of its proper divisors (2762789).

30390547 is a wasteful number, since it uses less digits than its factorization.

30390547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762788.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 30390547 is about 5512.7621933111. The cubic root of 30390547 is about 312.0657974040.

The spelling of 30390547 in words is "thirty million, three hundred ninety thousand, five hundred forty-seven".