20502030 has 16 divisors (see below), whose sum is σ = 49204944. Its totient is φ = 5467200.

The previous prime is 20502023. The next prime is 20502049. The reversal of 20502030 is 3020502.

It is a junction number, because it is equal to n+sod(n) for n = 20501997 and 20502015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341671 + ... + 341730.

It is an arithmetic number, because the mean of its divisors is an integer number (3075309).

Almost surely, 2^20502030 is an apocalyptic number.

20502030 is an abundant number, since it is smaller than the sum of its proper divisors (28702914).

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

20502030 is a wasteful number, since it uses less digits than its factorization.

20502030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683411.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 20502030 is about 4527.9167395172. The cubic root of 20502030 is about 273.6942172779.

Adding to 20502030 its reverse (3020502), we get a palindrome (23522532).

The spelling of 20502030 in words is "twenty million, five hundred two thousand, thirty".