20107340 has 24 divisors (see below), whose sum is σ = 46064592. Its totient is φ = 7311680.

The previous prime is 20107337. The next prime is 20107349. The reversal of 20107340 is 4370102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20107349) 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, 45479 + ... + 45918.

It is an arithmetic number, because the mean of its divisors is an integer number (1919358).

Almost surely, 2^20107340 is an apocalyptic number.

20107340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20107340 is an abundant number, since it is smaller than the sum of its proper divisors (25957252).

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

20107340 is a wasteful number, since it uses less digits than its factorization.

20107340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91417 (or 91415 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20107340 is about 4484.1208725903. The cubic root of 20107340 is about 271.9265047971.

Adding to 20107340 its reverse (4370102), we get a palindrome (24477442).

The spelling of 20107340 in words is "twenty million, one hundred seven thousand, three hundred forty".