20935704 has 96 divisors (see below), whose sum is σ = 58529520. Its totient is φ = 6217728.

The previous prime is 20935693. The next prime is 20935723. The reversal of 20935704 is 40753902.

20935704 = 7² + 8² + ... + 397².

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215784 + ... + 215880.

Almost surely, 2^20935704 is an apocalyptic number.

20935704 is a gapful number since it is divisible by the number (24) 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 20935704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29264760).

20935704 is an abundant number, since it is smaller than the sum of its proper divisors (37593816).

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

20935704 is a wasteful number, since it uses less digits than its factorization.

20935704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 20935704 is about 4575.5550482974. Note that the first 3 decimals coincide. The cubic root of 20935704 is about 275.6105618694.

The spelling of 20935704 in words is "twenty million, nine hundred thirty-five thousand, seven hundred four".