20520002 has 8 divisors (see below), whose sum is σ = 32118336. Its totient is φ = 9813892.

The previous prime is 20519977. The next prime is 20520029. The reversal of 20520002 is 20002502.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222998 + ... + 223089.

It is an arithmetic number, because the mean of its divisors is an integer number (4014792).

Almost surely, 2^20520002 is an apocalyptic number.

20520002 is a deficient number, since it is larger than the sum of its proper divisors (11598334).

20520002 is a wasteful number, since it uses less digits than its factorization.

20520002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446112.

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 20520002 is about 4529.9008819178. The cubic root of 20520002 is about 273.7741670178.

Adding to 20520002 its reverse (20002502), we get a palindrome (40522504).

The spelling of 20520002 in words is "twenty million, five hundred twenty thousand, two".