30486947 has 4 divisors (see below), whose sum is σ = 30498000. Its totient is φ = 30475896.

The previous prime is 30486941. The next prime is 30486959. The reversal of 30486947 is 74968403.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74968403 = 71 ⋅1055893.

It is a cyclic number.

It is not a de Polignac number, because 30486947 - 2⁴ = 30486931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30486941) 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, 2429 + ... + 8177.

It is an arithmetic number, because the mean of its divisors is an integer number (7624500).

Almost surely, 2^30486947 is an apocalyptic number.

30486947 is a deficient number, since it is larger than the sum of its proper divisors (11053).

30486947 is an equidigital number, since it uses as much as digits as its factorization.

30486947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11052.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 30486947 is about 5521.4986190345. The cubic root of 30486947 is about 312.3954107594.

The spelling of 30486947 in words is "thirty million, four hundred eighty-six thousand, nine hundred forty-seven".