20106270 has 24 divisors (see below), whose sum is σ = 52276536. Its totient is φ = 5361648.

The previous prime is 20106253. The next prime is 20106283. The reversal of 20106270 is 7260102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111612 + ... + 111791.

It is an arithmetic number, because the mean of its divisors is an integer number (2178189).

Almost surely, 2^20106270 is an apocalyptic number.

20106270 is an abundant number, since it is smaller than the sum of its proper divisors (32170266).

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

20106270 is a wasteful number, since it uses less digits than its factorization.

20106270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223416 (or 223413 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20106270 is about 4484.0015611059. The cubic root of 20106270 is about 271.9216812431.

Adding to 20106270 its reverse (7260102), we get a palindrome (27366372).

The spelling of 20106270 in words is "twenty million, one hundred six thousand, two hundred seventy".