30219285 has 24 divisors (see below), whose sum is σ = 51369696. Its totient is φ = 15166720.

The previous prime is 30219281. The next prime is 30219289. The reversal of 30219285 is 58291203.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30219281) and next prime (30219289).

It is not a de Polignac number, because 30219285 - 2² = 30219281 is a prime.

It is a super-2 number, since 2×30219285² = 1826410371822450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30219281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 850 + ... + 7820.

It is an arithmetic number, because the mean of its divisors is an integer number (2140404).

Almost surely, 2^30219285 is an apocalyptic number.

It is an amenable number.

30219285 is a deficient number, since it is larger than the sum of its proper divisors (21150411).

30219285 is a wasteful number, since it uses less digits than its factorization.

30219285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013 (or 6996 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 30219285 is about 5497.2070181138. The cubic root of 30219285 is about 311.4784906312.

The spelling of 30219285 in words is "thirty million, two hundred nineteen thousand, two hundred eighty-five".