20881294 has 8 divisors (see below), whose sum is σ = 35796528. Its totient is φ = 8949120.

The previous prime is 20881271. The next prime is 20881297. The reversal of 20881294 is 49218802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20881294² = 872056878228872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20881297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745747 + ... + 745774.

It is an arithmetic number, because the mean of its divisors is an integer number (4474566).

Almost surely, 2^20881294 is an apocalyptic number.

20881294 is a deficient number, since it is larger than the sum of its proper divisors (14915234).

20881294 is a wasteful number, since it uses less digits than its factorization.

20881294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491530.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 20881294 is about 4569.6054534281. The cubic root of 20881294 is about 275.3715924272.

The spelling of 20881294 in words is "twenty million, eight hundred eighty-one thousand, two hundred ninety-four".