30135252 has 24 divisors (see below), whose sum is σ = 80360896. Its totient is φ = 8610048.

The previous prime is 30135251. The next prime is 30135293. The reversal of 30135252 is 25253103.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30135251) 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, 179293 + ... + 179460.

Almost surely, 2^30135252 is an apocalyptic number.

It is an amenable number.

30135252 is an abundant number, since it is smaller than the sum of its proper divisors (50225644).

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

30135252 is a wasteful number, since it uses less digits than its factorization.

30135252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358767 (or 358765 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 30135252 is about 5489.5584521890. The cubic root of 30135252 is about 311.1895055089.

Adding to 30135252 its reverse (25253103), we get a palindrome (55388355).

It can be divided in two parts, 301 and 35252, that added together give a palindrome (35553).

The spelling of 30135252 in words is "thirty million, one hundred thirty-five thousand, two hundred fifty-two".