30071284 has 12 divisors (see below), whose sum is σ = 52920000. Its totient is φ = 14951288.

The previous prime is 30071203. The next prime is 30071287. The reversal of 30071284 is 48217003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30071287) 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, 20284 + ... + 21715.

It is an arithmetic number, because the mean of its divisors is an integer number (4410000).

Almost surely, 2^30071284 is an apocalyptic number.

It is an amenable number.

30071284 is a deficient number, since it is larger than the sum of its proper divisors (22848716).

30071284 is a wasteful number, since it uses less digits than its factorization.

30071284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42182 (or 42180 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 30071284 is about 5483.7290232104. The cubic root of 30071284 is about 310.9691625493.

Adding to 30071284 its reverse (48217003), we get a palindrome (78288287).

The spelling of 30071284 in words is "thirty million, seventy-one thousand, two hundred eighty-four".