20741340 has 24 divisors (see below), whose sum is σ = 58075920. Its totient is φ = 5531008.

The previous prime is 20741323. The next prime is 20741341. The reversal of 20741340 is 4314702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20741341) 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, 172785 + ... + 172904.

It is an arithmetic number, because the mean of its divisors is an integer number (2419830).

Almost surely, 2^20741340 is an apocalyptic number.

20741340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20741340 is an abundant number, since it is smaller than the sum of its proper divisors (37334580).

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

20741340 is a wasteful number, since it uses less digits than its factorization.

20741340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345701 (or 345699 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20741340 is about 4554.2661318812. The cubic root of 20741340 is about 274.7549994219.

The spelling of 20741340 in words is "twenty million, seven hundred forty-one thousand, three hundred forty".