30155629 has 12 divisors (see below), whose sum is σ = 36029244. Its totient is φ = 25147584.

The previous prime is 30155627. The next prime is 30155639. The reversal of 30155629 is 92655103.

It can be written as a sum of positive squares in 2 ways, for example, as 15920100 + 14235529 = 3990^2 + 3773^2 .

It is not a de Polignac number, because 30155629 - 2¹ = 30155627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30155629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30155627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6504 + ... + 10129.

It is an arithmetic number, because the mean of its divisors is an integer number (3002437).

Almost surely, 2^30155629 is an apocalyptic number.

It is an amenable number.

30155629 is a deficient number, since it is larger than the sum of its proper divisors (5873615).

30155629 is a wasteful number, since it uses less digits than its factorization.

30155629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16684 (or 16677 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 30155629 is about 5491.4141166006. The cubic root of 30155629 is about 311.2596302456.

The spelling of 30155629 in words is "thirty million, one hundred fifty-five thousand, six hundred twenty-nine".