30842889 has 16 divisors (see below), whose sum is σ = 51271680. Its totient is φ = 16022160.

The previous prime is 30842887. The next prime is 30842891. The reversal of 30842889 is 98824803.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30842887) and next prime (30842891).

It is not a de Polignac number, because 30842889 - 2¹ = 30842887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30842889.

It is not an unprimeable number, because it can be changed into a prime (30842887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66529 + ... + 66990.

It is an arithmetic number, because the mean of its divisors is an integer number (3204480).

Almost surely, 2^30842889 is an apocalyptic number.

It is an amenable number.

30842889 is a deficient number, since it is larger than the sum of its proper divisors (20428791).

30842889 is a wasteful number, since it uses less digits than its factorization.

30842889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133540.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 30842889 is about 5553.6374566585. The cubic root of 30842889 is about 313.6064721317.

The spelling of 30842889 in words is "thirty million, eight hundred forty-two thousand, eight hundred eighty-nine".