20342930 has 16 divisors (see below), whose sum is σ = 36694080. Its totient is φ = 8120112.

The previous prime is 20342923. The next prime is 20342941. The reversal of 20342930 is 3924302.

It is a junction number, because it is equal to n+sod(n) for n = 20342896 and 20342905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3611 + ... + 7329.

It is an arithmetic number, because the mean of its divisors is an integer number (2293380).

Almost surely, 2^20342930 is an apocalyptic number.

20342930 is a deficient number, since it is larger than the sum of its proper divisors (16351150).

20342930 is a wasteful number, since it uses less digits than its factorization.

20342930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 20342930 is about 4510.3137363159. The cubic root of 20342930 is about 272.9844033901.

The spelling of 20342930 in words is "twenty million, three hundred forty-two thousand, nine hundred thirty".