498121216 has 80 divisors (see below), whose sum is σ = 1063592640. Its totient is φ = 232243200.

The previous prime is 498121207. The next prime is 498121219. The reversal of 498121216 is 612121894.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (498121219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1314115 + ... + 1314493.

It is an arithmetic number, because the mean of its divisors is an integer number (13294908).

Almost surely, 2^498121216 is an apocalyptic number.

498121216 is the 12886-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 498121216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531796320).

498121216 is an abundant number, since it is smaller than the sum of its proper divisors (565471424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

498121216 is a wasteful number, since it uses less digits than its factorization.

498121216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565 (or 549 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 498121216 is about 22318.6293485958. The cubic root of 498121216 is about 792.7051503112.

The spelling of 498121216 in words is "four hundred ninety-eight million, one hundred twenty-one thousand, two hundred sixteen".