20107912 has 32 divisors (see below), whose sum is σ = 41640480. Its totient is φ = 9026560.

The previous prime is 20107897. The next prime is 20107931. The reversal of 20107912 is 21970102.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 5928 + ... + 8680.

It is an arithmetic number, because the mean of its divisors is an integer number (1301265).

Almost surely, 2^20107912 is an apocalyptic number.

20107912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20107912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20820240).

20107912 is an abundant number, since it is smaller than the sum of its proper divisors (21532568).

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

20107912 is a wasteful number, since it uses less digits than its factorization.

20107912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853 (or 2849 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 20107912 is about 4484.1846527546. The cubic root of 20107912 is about 271.9290832998.

The spelling of 20107912 in words is "twenty million, one hundred seven thousand, nine hundred twelve".