30228547 has 4 divisors (see below), whose sum is σ = 30247336. Its totient is φ = 30209760.

The previous prime is 30228529. The next prime is 30228551. The reversal of 30228547 is 74582203.

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 30228547 - 2¹⁵ = 30195779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30228047) 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, 6729 + ... + 10282.

It is an arithmetic number, because the mean of its divisors is an integer number (7561834).

Almost surely, 2^30228547 is an apocalyptic number.

30228547 is a deficient number, since it is larger than the sum of its proper divisors (18789).

30228547 is a wasteful number, since it uses less digits than its factorization.

30228547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18788.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 30228547 is about 5498.0493813715. The cubic root of 30228547 is about 311.5103093754.

The spelling of 30228547 in words is "thirty million, two hundred twenty-eight thousand, five hundred forty-seven".