30629189 has 4 divisors (see below), whose sum is σ = 32430924. Its totient is φ = 28827456.

The previous prime is 30629171. The next prime is 30629219. The reversal of 30629189 is 98192603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98192603 = 359 ⋅273517.

It can be written as a sum of positive squares in 2 ways, for example, as 14364100 + 16265089 = 3790^2 + 4033^2 .

It is a cyclic number.

It is not a de Polignac number, because 30629189 - 2¹⁶ = 30563653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30629149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900842 + ... + 900875.

It is an arithmetic number, because the mean of its divisors is an integer number (8107731).

Almost surely, 2^30629189 is an apocalyptic number.

It is an amenable number.

30629189 is a deficient number, since it is larger than the sum of its proper divisors (1801735).

30629189 is a wasteful number, since it uses less digits than its factorization.

30629189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801734.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 30629189 is about 5534.3643718136. The cubic root of 30629189 is about 312.8805016312.

The spelling of 30629189 in words is "thirty million, six hundred twenty-nine thousand, one hundred eighty-nine".