20934342 has 64 divisors (see below), whose sum is σ = 54673920. Its totient is φ = 5853600.

The previous prime is 20934337. The next prime is 20934377. The reversal of 20934342 is 24343902.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6367 + ... + 9077.

It is an arithmetic number, because the mean of its divisors is an integer number (854280).

Almost surely, 2^20934342 is an apocalyptic number.

20934342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20934342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27336960).

20934342 is an abundant number, since it is smaller than the sum of its proper divisors (33739578).

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

20934342 is a wasteful number, since it uses less digits than its factorization.

20934342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746 (or 2740 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 20934342 is about 4575.4062114746. The cubic root of 20934342 is about 275.6045850028.

The spelling of 20934342 in words is "twenty million, nine hundred thirty-four thousand, three hundred forty-two".