20342034 has 48 divisors (see below), whose sum is σ = 45402552. Its totient is φ = 6580224.

The previous prime is 20342029. The next prime is 20342039. The reversal of 20342034 is 43024302.

It is an interprime number because it is at equal distance from previous prime (20342029) and next prime (20342039).

It can be written as a sum of positive squares in 4 ways, for example, as 13068225 + 7273809 = 3615^2 + 2697^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20341998 and 20342016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342039) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 148414 + ... + 148550.

Almost surely, 2^20342034 is an apocalyptic number.

20342034 is an abundant number, since it is smaller than the sum of its proper divisors (25060518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20342034 is a wasteful number, since it uses less digits than its factorization.

20342034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20342034 is about 4510.2144073203. The cubic root of 20342034 is about 272.9803954847.

Adding to 20342034 its reverse (43024302), we get a palindrome (63366336).

The spelling of 20342034 in words is "twenty million, three hundred forty-two thousand, thirty-four".