30620989 has 8 divisors (see below), whose sum is σ = 36837440. Its totient is φ = 24865056.

The previous prime is 30620987. The next prime is 30620999. The reversal of 30620989 is 98902603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30620989 - 2¹ = 30620987 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 (30620987) 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, 114984 + ... + 115249.

It is an arithmetic number, because the mean of its divisors is an integer number (4604680).

Almost surely, 2^30620989 is an apocalyptic number.

It is an amenable number.

30620989 is a deficient number, since it is larger than the sum of its proper divisors (6216451).

30620989 is a wasteful number, since it uses less digits than its factorization.

30620989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230259.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 30620989 is about 5533.6234964081. The cubic root of 30620989 is about 312.8525778414.

The spelling of 30620989 in words is "thirty million, six hundred twenty thousand, nine hundred eighty-nine".