20642150 has 24 divisors (see below), whose sum is σ = 39291384. Its totient is φ = 8064000.

The previous prime is 20642129. The next prime is 20642161. The reversal of 20642150 is 5124602.

It is a happy number.

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, 2651 + ... + 6950.

It is an arithmetic number, because the mean of its divisors is an integer number (1637141).

Almost surely, 2^20642150 is an apocalyptic number.

20642150 is a deficient number, since it is larger than the sum of its proper divisors (18649234).

20642150 is a wasteful number, since it uses less digits than its factorization.

20642150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9656 (or 9651 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20642150 is about 4543.3632916596. The cubic root of 20642150 is about 274.3163182256.

Adding to 20642150 its reverse (5124602), we get a palindrome (25766752).

The spelling of 20642150 in words is "twenty million, six hundred forty-two thousand, one hundred fifty".