20875426 has 32 divisors (see below), whose sum is σ = 37594368. Its totient is φ = 8567040.

The previous prime is 20875409. The next prime is 20875427. The reversal of 20875426 is 62457802.

It is a junction number, because it is equal to n+sod(n) for n = 20875391 and 20875400.

It is not an unprimeable number, because it can be changed into a prime (20875427) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12666 + ... + 14218.

It is an arithmetic number, because the mean of its divisors is an integer number (1174824).

Almost surely, 2^20875426 is an apocalyptic number.

20875426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20875426 is a deficient number, since it is larger than the sum of its proper divisors (16718942).

20875426 is a wasteful number, since it uses less digits than its factorization.

20875426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 20875426 is about 4568.9633397522. The cubic root of 20875426 is about 275.3457953048.

The spelling of 20875426 in words is "twenty million, eight hundred seventy-five thousand, four hundred twenty-six".