20747934 has 32 divisors (see below), whose sum is σ = 47700000. Its totient is φ = 6676992.

The previous prime is 20747929. The next prime is 20747941. The reversal of 20747934 is 43974702.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5059 + ... + 8190.

It is an arithmetic number, because the mean of its divisors is an integer number (1490625).

Almost surely, 2^20747934 is an apocalyptic number.

20747934 is an abundant number, since it is smaller than the sum of its proper divisors (26952066).

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

20747934 is a wasteful number, since it uses less digits than its factorization.

20747934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13289 (or 13283 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 20747934 is about 4554.9900109660. The cubic root of 20747934 is about 274.7841126568.

The spelling of 20747934 in words is "twenty million, seven hundred forty-seven thousand, nine hundred thirty-four".