20934340 has 24 divisors (see below), whose sum is σ = 50242752. Its totient is φ = 7177440.

The previous prime is 20934337. The next prime is 20934377. The reversal of 20934340 is 4343902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74626 + ... + 74905.

It is an arithmetic number, because the mean of its divisors is an integer number (2093448).

Almost surely, 2^20934340 is an apocalyptic number.

20934340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20934340 is an abundant number, since it is smaller than the sum of its proper divisors (29308412).

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

20934340 is a wasteful number, since it uses less digits than its factorization.

20934340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149547 (or 149545 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20934340 is about 4575.4059929147. The cubic root of 20934340 is about 275.6045762260.

The spelling of 20934340 in words is "twenty million, nine hundred thirty-four thousand, three hundred forty".