20520034 has 8 divisors (see below), whose sum is σ = 31284828. Its totient is φ = 10091760.

The previous prime is 20520029. The next prime is 20520041. The reversal of 20520034 is 43002502.

It can be written as a sum of positive squares in 2 ways, for example, as 20223009 + 297025 = 4497^2 + 545^2 .

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

It is a super-2 number, since 2×20520034² = 842143590722312, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 83977 + ... + 84220.

Almost surely, 2^20520034 is an apocalyptic number.

20520034 is a deficient number, since it is larger than the sum of its proper divisors (10764794).

20520034 is a wasteful number, since it uses less digits than its factorization.

20520034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168260.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20520034 is about 4529.9044140026. The cubic root of 20520034 is about 273.7743093304.

Adding to 20520034 its reverse (43002502), we get a palindrome (63522536).

The spelling of 20520034 in words is "twenty million, five hundred twenty thousand, thirty-four".