20620550 has 12 divisors (see below), whose sum is σ = 38354316. Its totient is φ = 8248200.

The previous prime is 20620547. The next prime is 20620571. The reversal of 20620550 is 5502602.

It is a happy number.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206156 + ... + 206255.

It is an arithmetic number, because the mean of its divisors is an integer number (3196193).

Almost surely, 2^20620550 is an apocalyptic number.

20620550 is a deficient number, since it is larger than the sum of its proper divisors (17733766).

20620550 is a wasteful number, since it uses less digits than its factorization.

20620550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412423 (or 412418 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 20620550 is about 4540.9855758414. The cubic root of 20620550 is about 274.2206030602.

The spelling of 20620550 in words is "twenty million, six hundred twenty thousand, five hundred fifty".