20801438 has 32 divisors (see below), whose sum is σ = 38320128. Its totient is φ = 8265600.

The previous prime is 20801419. The next prime is 20801441. The reversal of 20801438 is 83410802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16283 + ... + 17513.

It is an arithmetic number, because the mean of its divisors is an integer number (1197504).

Almost surely, 2^20801438 is an apocalyptic number.

20801438 is a deficient number, since it is larger than the sum of its proper divisors (17518690).

20801438 is a wasteful number, since it uses less digits than its factorization.

20801438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 20801438 is about 4560.8593488508. The cubic root of 20801438 is about 275.0201109259.

The spelling of 20801438 in words is "twenty million, eight hundred one thousand, four hundred thirty-eight".