20626380 has 48 divisors (see below), whose sum is σ = 64172640. Its totient is φ = 5500224.

The previous prime is 20626379. The next prime is 20626391. The reversal of 20626380 is 8362602.

20626380 is a `hidden beast` number, since 2 + 0 + 626 + 38 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18559 + ... + 19638.

It is an arithmetic number, because the mean of its divisors is an integer number (1336930).

Almost surely, 2^20626380 is an apocalyptic number.

20626380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20626380 is an abundant number, since it is smaller than the sum of its proper divisors (43546260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20626380 is a wasteful number, since it uses less digits than its factorization.

20626380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38215 (or 38207 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20626380 is about 4541.6274616045. The cubic root of 20626380 is about 274.2464438756.

Adding to 20626380 its reverse (8362602), we get a palindrome (28988982).

The spelling of 20626380 in words is "twenty million, six hundred twenty-six thousand, three hundred eighty".