20669150 has 24 divisors (see below), whose sum is σ = 40469880. Its totient is φ = 7832160.

The previous prime is 20669149. The next prime is 20669167. The reversal of 20669150 is 5196602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9929 + ... + 11828.

It is an arithmetic number, because the mean of its divisors is an integer number (1686245).

Almost surely, 2^20669150 is an apocalyptic number.

20669150 is a deficient number, since it is larger than the sum of its proper divisors (19800730).

20669150 is a wasteful number, since it uses less digits than its factorization.

20669150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21788 (or 21783 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 20669150 is about 4546.3336877093. Note that the first 3 decimals coincide. The cubic root of 20669150 is about 274.4358683318.

The spelling of 20669150 in words is "twenty million, six hundred sixty-nine thousand, one hundred fifty".