20740308 has 24 divisors (see below), whose sum is σ = 48652800. Its totient is φ = 6876480.

The previous prime is 20740297. The next prime is 20740351. The reversal of 20740308 is 80304702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2233 + ... + 6816.

It is an arithmetic number, because the mean of its divisors is an integer number (2027200).

Almost surely, 2^20740308 is an apocalyptic number.

It is an amenable number.

20740308 is an abundant number, since it is smaller than the sum of its proper divisors (27912492).

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

20740308 is a wasteful number, since it uses less digits than its factorization.

20740308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9247 (or 9245 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20740308 is about 4554.1528301101. The cubic root of 20740308 is about 274.7504424701.

The spelling of 20740308 in words is "twenty million, seven hundred forty thousand, three hundred eight".