20498255 has 8 divisors (see below), whose sum is σ = 24701424. Its totient is φ = 16329600.

The previous prime is 20498249. The next prime is 20498263. The reversal of 20498255 is 55289402.

It is a happy number.

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

It is not a de Polignac number, because 20498255 - 2⁴ = 20498239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7301 + ... + 9710.

It is an arithmetic number, because the mean of its divisors is an integer number (3087678).

Almost surely, 2^20498255 is an apocalyptic number.

20498255 is a deficient number, since it is larger than the sum of its proper divisors (4203169).

20498255 is a wasteful number, since it uses less digits than its factorization.

20498255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17257.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 20498255 is about 4527.4998619547. The cubic root of 20498255 is about 273.6774179806.

The spelling of 20498255 in words is "twenty million, four hundred ninety-eight thousand, two hundred fifty-five".