20881498 has 8 divisors (see below), whose sum is σ = 34169760. Its totient is φ = 9491580.

The previous prime is 20881477. The next prime is 20881501. The reversal of 20881498 is 89418802.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20881498.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474558 + ... + 474601.

It is an arithmetic number, because the mean of its divisors is an integer number (4271220).

Almost surely, 2^20881498 is an apocalyptic number.

20881498 is a deficient number, since it is larger than the sum of its proper divisors (13288262).

20881498 is a wasteful number, since it uses less digits than its factorization.

20881498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949172.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 20881498 is about 4569.6277747755. The cubic root of 20881498 is about 275.3724891727.

The spelling of 20881498 in words is "twenty million, eight hundred eighty-one thousand, four hundred ninety-eight".