20530110 has 16 divisors (see below), whose sum is σ = 49272336. Its totient is φ = 5474688.

The previous prime is 20530109. The next prime is 20530121. The reversal of 20530110 is 1103502.

It is a super-2 number, since 2×20530110² = 842970833224200, which contains 22 as substring.

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, 342139 + ... + 342198.

It is an arithmetic number, because the mean of its divisors is an integer number (3079521).

Almost surely, 2^20530110 is an apocalyptic number.

20530110 is an abundant number, since it is smaller than the sum of its proper divisors (28742226).

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

20530110 is a wasteful number, since it uses less digits than its factorization.

20530110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684347.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 20530110 is about 4531.0164422566. The cubic root of 20530110 is about 273.8191126765.

Adding to 20530110 its reverse (1103502), we get a palindrome (21633612).

The spelling of 20530110 in words is "twenty million, five hundred thirty thousand, one hundred ten".