20740296 has 32 divisors (see below), whose sum is σ = 54106560. Its totient is φ = 6612672.

The previous prime is 20740261. The next prime is 20740297. The reversal of 20740296 is 69204702.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20740297) 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, 18235 + ... + 19338.

It is an arithmetic number, because the mean of its divisors is an integer number (1690830).

Almost surely, 2^20740296 is an apocalyptic number.

It is an amenable number.

20740296 is an abundant number, since it is smaller than the sum of its proper divisors (33366264).

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

20740296 is a wasteful number, since it uses less digits than its factorization.

20740296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37605 (or 37601 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 20740296 is about 4554.1515126311. The cubic root of 20740296 is about 274.7503894814.

Adding to 20740296 its reverse (69204702), we get a palindrome (89944998).

The spelling of 20740296 in words is "twenty million, seven hundred forty thousand, two hundred ninety-six".