30129652 has 48 divisors (see below), whose sum is σ = 62415360. Its totient is φ = 12460032.

The previous prime is 30129601. The next prime is 30129653. The reversal of 30129652 is 25692103.

It is a super-2 number, since 2×30129652² = 1815591859282208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 30129652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30129653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117108 + ... + 117364.

It is an arithmetic number, because the mean of its divisors is an integer number (1300320).

Almost surely, 2^30129652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30129652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31207680).

30129652 is an abundant number, since it is smaller than the sum of its proper divisors (32285708).

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

30129652 is a wasteful number, since it uses less digits than its factorization.

30129652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 30129652 is about 5489.0483692531. The cubic root of 30129652 is about 311.1702283161.

The spelling of 30129652 in words is "thirty million, one hundred twenty-nine thousand, six hundred fifty-two".