30447 has 12 divisors (see below), whose sum is σ = 46800. Its totient is φ = 19008.

The previous prime is 30431. The next prime is 30449. The reversal of 30447 is 74403.

It is not a de Polignac number, because 30447 - 2⁴ = 30431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54 + ... + 252.

It is an arithmetic number, because the mean of its divisors is an integer number (3900).

2³⁰⁴⁴⁷ is an apocalyptic number.

30447 is a deficient number, since it is larger than the sum of its proper divisors (16353).

30447 is a wasteful number, since it uses less digits than its factorization.

30447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 30447 is about 174.4906874306. The cubic root of 30447 is about 31.2258907379.

Subtracting 30447 from its reverse (74403), we obtain a triangular number (43956 = T₂₉₆).

It can be divided in two parts, 304 and 47, that added together give a triangular number (351 = T₂₆).

The spelling of 30447 in words is "thirty thousand, four hundred forty-seven".