30472291 has 4 divisors (see below), whose sum is σ = 30486352. Its totient is φ = 30458232.

The previous prime is 30472289. The next prime is 30472319. The reversal of 30472291 is 19227403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19227403 = 13 ⋅1479031.

It is a cyclic number.

It is not a de Polignac number, because 30472291 - 2¹ = 30472289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30472231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3015 + ... + 8368.

It is an arithmetic number, because the mean of its divisors is an integer number (7621588).

Almost surely, 2^30472291 is an apocalyptic number.

30472291 is a deficient number, since it is larger than the sum of its proper divisors (14061).

30472291 is a wasteful number, since it uses less digits than its factorization.

30472291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14060.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 30472291 is about 5520.1712835745. The cubic root of 30472291 is about 312.3453434196.

Adding to 30472291 its reverse (19227403), we get a palindrome (49699694).

The spelling of 30472291 in words is "thirty million, four hundred seventy-two thousand, two hundred ninety-one".