20528714 has 4 divisors (see below), whose sum is σ = 30793074. Its totient is φ = 10264356.

The previous prime is 20528713. The next prime is 20528737. The reversal of 20528714 is 41782502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11122225 + 9406489 = 3335^2 + 3067^2 .

It is not an unprimeable number, because it can be changed into a prime (20528713) by changing a digit.

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 as a sum of consecutive naturals, namely, 5132177 + ... + 5132180.

Almost surely, 2^20528714 is an apocalyptic number.

20528714 is a deficient number, since it is larger than the sum of its proper divisors (10264360).

20528714 is a wasteful number, since it uses less digits than its factorization.

20528714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10264359.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 20528714 is about 4530.8623903182. The cubic root of 20528714 is about 273.8129061803.

The spelling of 20528714 in words is "twenty million, five hundred twenty-eight thousand, seven hundred fourteen".