20743704 has 48 divisors (see below), whose sum is σ = 57559320. Its totient is φ = 6744960.

The previous prime is 20743703. The next prime is 20743711. The reversal of 20743704 is 40734702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20743703) 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, 562 + ... + 6465.

Almost surely, 2^20743704 is an apocalyptic number.

20743704 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 20743704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28779660).

20743704 is an abundant number, since it is smaller than the sum of its proper divisors (36815616).

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

20743704 is a wasteful number, since it uses less digits than its factorization.

20743704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7080 (or 7073 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20743704 is about 4554.5256613615. The cubic root of 20743704 is about 274.7654374512.

It can be divided in two parts, 2074 and 3704, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 20743704 in words is "twenty million, seven hundred forty-three thousand, seven hundred four".