30136230 has 48 divisors (see below), whose sum is σ = 80275104. Its totient is φ = 7839360.

The previous prime is 30136217. The next prime is 30136231. The reversal of 30136230 is 3263103.

It is a happy number.

30136230 is a `hidden beast` number, since 30 + 13 + 623 + 0 = 666.

It is a super-2 number, since 2×30136230² = 1816384717225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30136231) 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, 394 + ... + 7773.

It is an arithmetic number, because the mean of its divisors is an integer number (1672398).

Almost surely, 2^30136230 is an apocalyptic number.

30136230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30136230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40137552).

30136230 is an abundant number, since it is smaller than the sum of its proper divisors (50138874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30136230 is a wasteful number, since it uses less digits than its factorization.

30136230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8221 (or 8218 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 30136230 is about 5489.6475296689. The cubic root of 30136230 is about 311.1928718880.

Adding to 30136230 its reverse (3263103), we get a palindrome (33399333).

The spelling of 30136230 in words is "thirty million, one hundred thirty-six thousand, two hundred thirty".