20907126 has 16 divisors (see below), whose sum is σ = 46460400. Its totient is φ = 6969024.

The previous prime is 20907091. The next prime is 20907137. The reversal of 20907126 is 62170902.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20907126.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193531 + ... + 193638.

It is an arithmetic number, because the mean of its divisors is an integer number (2903775).

Almost surely, 2^20907126 is an apocalyptic number.

20907126 is an abundant number, since it is smaller than the sum of its proper divisors (25553274).

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

20907126 is a wasteful number, since it uses less digits than its factorization.

20907126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387180 (or 387174 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 20907126 is about 4572.4310820394. The cubic root of 20907126 is about 275.4850986063.

It can be divided in two parts, 2090 and 7126, that added together give a square (9216 = 96²).

The spelling of 20907126 in words is "twenty million, nine hundred seven thousand, one hundred twenty-six".