20524994 has 16 divisors (see below), whose sum is σ = 35935488. Its totient is φ = 8608992.

The previous prime is 20524991. The next prime is 20525009. The reversal of 20524994 is 49942502.

It is not an unprimeable number, because it can be changed into a prime (20524991) 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 in 7 ways as a sum of consecutive naturals, for example, 14939 + ... + 16254.

It is an arithmetic number, because the mean of its divisors is an integer number (2245968).

Almost surely, 2^20524994 is an apocalyptic number.

20524994 is a deficient number, since it is larger than the sum of its proper divisors (15410494).

20524994 is a wasteful number, since it uses less digits than its factorization.

20524994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31249.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 20524994 is about 4530.4518538442. The cubic root of 20524994 is about 273.7963660057.

The spelling of 20524994 in words is "twenty million, five hundred twenty-four thousand, nine hundred ninety-four".