498578820 has 96 divisors (see below), whose sum is σ = 1487904768. Its totient is φ = 124451712.

The previous prime is 498578809. The next prime is 498578837. The reversal of 498578820 is 28875894.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61017 + ... + 68703.

It is an arithmetic number, because the mean of its divisors is an integer number (15499008).

Almost surely, 2^498578820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 498578820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (743952384).

498578820 is an abundant number, since it is smaller than the sum of its proper divisors (989325948).

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

498578820 is a wasteful number, since it uses less digits than its factorization.

498578820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7769 (or 7767 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The square root of 498578820 is about 22328.8786104453. The cubic root of 498578820 is about 792.9478181685.

The spelling of 498578820 in words is "four hundred ninety-eight million, five hundred seventy-eight thousand, eight hundred twenty".