20741715 has 24 divisors (see below), whose sum is σ = 36279360. Its totient is φ = 10961664.

The previous prime is 20741713. The next prime is 20741723. The reversal of 20741715 is 51714702.

It is not a de Polignac number, because 20741715 - 2¹ = 20741713 is a prime.

It is a super-2 number, since 2×20741715² = 860437482282450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20741713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3046 + ... + 7124.

It is an arithmetic number, because the mean of its divisors is an integer number (1511640).

Almost surely, 2^20741715 is an apocalyptic number.

20741715 is a deficient number, since it is larger than the sum of its proper divisors (15537645).

20741715 is a wasteful number, since it uses less digits than its factorization.

20741715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4203 (or 4200 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 20741715 is about 4554.3073018847. The cubic root of 20741715 is about 274.7566552536.

The spelling of 20741715 in words is "twenty million, seven hundred forty-one thousand, seven hundred fifteen".