20898458 has 8 divisors (see below), whose sum is σ = 35825952. Its totient is φ = 8956476.

The previous prime is 20898443. The next prime is 20898481. The reversal of 20898458 is 85489802.

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

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, 746360 + ... + 746387.

It is an arithmetic number, because the mean of its divisors is an integer number (4478244).

Almost surely, 2^20898458 is an apocalyptic number.

20898458 is a deficient number, since it is larger than the sum of its proper divisors (14927494).

20898458 is a wasteful number, since it uses less digits than its factorization.

20898458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492756.

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 20898458 is about 4571.4831291387. The cubic root of 20898458 is about 275.4470217178.

The spelling of 20898458 in words is "twenty million, eight hundred ninety-eight thousand, four hundred fifty-eight".