30288471 has 8 divisors (see below), whose sum is σ = 40498560. Its totient is φ = 20135352.

The previous prime is 30288449. The next prime is 30288473. The reversal of 30288471 is 17488203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30288471 - 2⁷ = 30288343 is a prime.

It is a super-3 number, since 3×30288471³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30288473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12985 + ... + 15138.

It is an arithmetic number, because the mean of its divisors is an integer number (5062320).

Almost surely, 2^30288471 is an apocalyptic number.

30288471 is a deficient number, since it is larger than the sum of its proper divisors (10210089).

30288471 is a wasteful number, since it uses less digits than its factorization.

30288471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28485.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 30288471 is about 5503.4962523836. The cubic root of 30288471 is about 311.7160158384.

The spelling of 30288471 in words is "thirty million, two hundred eighty-eight thousand, four hundred seventy-one".