20934100 has 36 divisors (see below), whose sum is σ = 49559328. Its totient is φ = 7612000.

The previous prime is 20934097. The next prime is 20934107. The reversal of 20934100 is 143902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20934107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8416 + ... + 10615.

It is an arithmetic number, because the mean of its divisors is an integer number (1376648).

Almost surely, 2^20934100 is an apocalyptic number.

20934100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20934100 is an abundant number, since it is smaller than the sum of its proper divisors (28625228).

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

20934100 is a wasteful number, since it uses less digits than its factorization.

20934100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19056 (or 19049 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20934100 is about 4575.3797656588. The cubic root of 20934100 is about 275.6035230068.

The spelling of 20934100 in words is "twenty million, nine hundred thirty-four thousand, one hundred".