20763704 has 32 divisors (see below), whose sum is σ = 42729120. Its totient is φ = 9399936.

The previous prime is 20763689. The next prime is 20763709. The reversal of 20763704 is 40736702.

It is a super-2 number, since 2×20763704² = 862262807599232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20763709) 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, 3629 + ... + 7395.

It is an arithmetic number, because the mean of its divisors is an integer number (1335285).

Almost surely, 2^20763704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20763704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21364560).

20763704 is an abundant number, since it is smaller than the sum of its proper divisors (21965416).

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

20763704 is a wasteful number, since it uses less digits than its factorization.

20763704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3839 (or 3835 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 20763704 is about 4556.7207507154. The cubic root of 20763704 is about 274.8537139326.

The spelling of 20763704 in words is "twenty million, seven hundred sixty-three thousand, seven hundred four".