30702689 has 6 divisors (see below), whose sum is σ = 32404050. Its totient is φ = 29086416.

The previous prime is 30702673. The next prime is 30702701. The reversal of 30702689 is 98620703.

It can be written as a sum of positive squares in only one way, i.e., 25928464 + 4774225 = 5092^2 + 2185^2 .

It is not a de Polignac number, because 30702689 - 2⁴ = 30702673 is a prime.

It is a super-2 number, since 2×30702689² = 1885310223661442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30702649) 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 5 ways as a sum of consecutive naturals, for example, 42164 + ... + 42885.

It is an arithmetic number, because the mean of its divisors is an integer number (5400675).

Almost surely, 2^30702689 is an apocalyptic number.

It is an amenable number.

30702689 is a deficient number, since it is larger than the sum of its proper divisors (1701361).

30702689 is an equidigital number, since it uses as much as digits as its factorization.

30702689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85087 (or 85068 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 30702689 is about 5541.0007218913. Note that the first 3 decimals coincide. The cubic root of 30702689 is about 313.1305718773.

The spelling of 30702689 in words is "thirty million, seven hundred two thousand, six hundred eighty-nine".