20219108 has 24 divisors (see below), whose sum is σ = 43549632. Its totient is φ = 7998624.

The previous prime is 20219107. The next prime is 20219141. The reversal of 20219108 is 80191202.

It is not an unprimeable number, because it can be changed into a prime (20219107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27410 + ... + 28137.

It is an arithmetic number, because the mean of its divisors is an integer number (1814568).

Almost surely, 2^20219108 is an apocalyptic number.

20219108 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20219108 is an abundant number, since it is smaller than the sum of its proper divisors (23330524).

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

20219108 is a wasteful number, since it uses less digits than its factorization.

20219108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55571 (or 55569 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 20219108 is about 4496.5662454811. The cubic root of 20219108 is about 272.4294147062.

The spelling of 20219108 in words is "twenty million, two hundred nineteen thousand, one hundred eight".