20498098 has 4 divisors (see below), whose sum is σ = 30747150. Its totient is φ = 10249048.

The previous prime is 20498059. The next prime is 20498117. The reversal of 20498098 is 89089402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18601969 + 1896129 = 4313^2 + 1377^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20498098.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5124523 + ... + 5124526.

Almost surely, 2^20498098 is an apocalyptic number.

20498098 is a deficient number, since it is larger than the sum of its proper divisors (10249052).

20498098 is a wasteful number, since it uses less digits than its factorization.

20498098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10249051.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 20498098 is about 4527.4825234340. The cubic root of 20498098 is about 273.6767192632.

The spelling of 20498098 in words is "twenty million, four hundred ninety-eight thousand, ninety-eight".