20888426 has 16 divisors (see below), whose sum is σ = 33826464. Its totient is φ = 9616944.

The previous prime is 20888423. The next prime is 20888431. The reversal of 20888426 is 62488802.

It is a self number, because there is not a number n which added to its sum of digits gives 20888426.

It is not an unprimeable number, because it can be changed into a prime (20888423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13925 + ... + 15351.

It is an arithmetic number, because the mean of its divisors is an integer number (2114154).

Almost surely, 2^20888426 is an apocalyptic number.

20888426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20888426 is a deficient number, since it is larger than the sum of its proper divisors (12938038).

20888426 is a wasteful number, since it uses less digits than its factorization.

20888426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005.

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 20888426 is about 4570.3857605239. The cubic root of 20888426 is about 275.4029398881.

The spelling of 20888426 in words is "twenty million, eight hundred eighty-eight thousand, four hundred twenty-six".