20926147 has 16 divisors (see below), whose sum is σ = 23823360. Its totient is φ = 18208800.

The previous prime is 20926093. The next prime is 20926153. The reversal of 20926147 is 74162902.

It is a cyclic number.

It is not a de Polignac number, because 20926147 - 2⁷ = 20926019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (20926187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36888 + ... + 37450.

It is an arithmetic number, because the mean of its divisors is an integer number (1488960).

Almost surely, 2^20926147 is an apocalyptic number.

20926147 is a deficient number, since it is larger than the sum of its proper divisors (2897213).

20926147 is a wasteful number, since it uses less digits than its factorization.

20926147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 20926147 is about 4574.5105749140. The cubic root of 20926147 is about 275.5686173991.

The spelling of 20926147 in words is "twenty million, nine hundred twenty-six thousand, one hundred forty-seven".