20912067 has 48 divisors (see below), whose sum is σ = 35175840. Its totient is φ = 12260160.

The previous prime is 20912053. The next prime is 20912069. The reversal of 20912067 is 76021902.

It is not a de Polignac number, because 20912067 - 2¹⁰ = 20911043 is a prime.

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 20912067.

It is not an unprimeable number, because it can be changed into a prime (20912069) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120793 + ... + 120965.

It is an arithmetic number, because the mean of its divisors is an integer number (732830).

Almost surely, 2^20912067 is an apocalyptic number.

20912067 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20912067 is a deficient number, since it is larger than the sum of its proper divisors (14263773).

20912067 is a wasteful number, since it uses less digits than its factorization.

20912067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 224 counting only the distinct ones).

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

The square root of 20912067 is about 4572.9713535075. The cubic root of 20912067 is about 275.5067987778.

Adding to 20912067 its reverse (76021902), we get a palindrome (96933969).

The spelling of 20912067 in words is "twenty million, nine hundred twelve thousand, sixty-seven".