20445034 has 8 divisors (see below), whose sum is σ = 31187520. Its totient is φ = 10049196.

The previous prime is 20445017. The next prime is 20445041. The reversal of 20445034 is 43054402.

It is a happy number.

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

It is a super-2 number, since 2×20445034² = 835998830522312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20444996 and 20445014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86514 + ... + 86749.

It is an arithmetic number, because the mean of its divisors is an integer number (3898440).

Almost surely, 2^20445034 is an apocalyptic number.

20445034 is a deficient number, since it is larger than the sum of its proper divisors (10742486).

20445034 is a wasteful number, since it uses less digits than its factorization.

20445034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173324.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 20445034 is about 4521.6185155318. The cubic root of 20445034 is about 273.4403569922.

Adding to 20445034 its reverse (43054402), we get a palindrome (63499436).

The spelling of 20445034 in words is "twenty million, four hundred forty-five thousand, thirty-four".