20610912 has 48 divisors (see below), whose sum is σ = 61834752. Its totient is φ = 5888640.

The previous prime is 20610911. The next prime is 20610917. The reversal of 20610912 is 21901602.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20610911) 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, 14664 + ... + 16007.

It is an arithmetic number, because the mean of its divisors is an integer number (1288224).

Almost surely, 2^20610912 is an apocalyptic number.

It is an amenable number.

20610912 is an abundant number, since it is smaller than the sum of its proper divisors (41223840).

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

20610912 is a wasteful number, since it uses less digits than its factorization.

20610912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30691 (or 30683 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 20610912 is about 4539.9242284426. The cubic root of 20610912 is about 274.1778730321.

The spelling of 20610912 in words is "twenty million, six hundred ten thousand, nine hundred twelve".