20527990 has 16 divisors (see below), whose sum is σ = 42229152. Its totient is φ = 7038144.

The previous prime is 20527981. The next prime is 20528023. The reversal of 20527990 is 9972502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146559 + ... + 146698.

It is an arithmetic number, because the mean of its divisors is an integer number (2639322).

Almost surely, 2^20527990 is an apocalyptic number.

20527990 is an abundant number, since it is smaller than the sum of its proper divisors (21701162).

20527990 is a wasteful number, since it uses less digits than its factorization.

20527990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293271.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 20527990 is about 4530.7824931241. The cubic root of 20527990 is about 273.8096872277.

The spelling of 20527990 in words is "twenty million, five hundred twenty-seven thousand, nine hundred ninety".