498309840 has 160 divisors (see below), whose sum is σ = 1961660160. Its totient is φ = 113895936.

The previous prime is 498309829. The next prime is 498309853. The reversal of 498309840 is 48903894.

It is a happy number.

498309840 is a `hidden beast` number, since 498 + 30 + 98 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1359 + ... + 31598.

It is an arithmetic number, because the mean of its divisors is an integer number (12260376).

Almost surely, 2^498309840 is an apocalyptic number.

498309840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 498309840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980830080).

498309840 is an abundant number, since it is smaller than the sum of its proper divisors (1463350320).

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

498309840 is a wasteful number, since it uses less digits than its factorization.

498309840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32986 (or 32974 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 498309840 is about 22322.8546561590. The cubic root of 498309840 is about 792.8051958035.

The spelling of 498309840 in words is "four hundred ninety-eight million, three hundred nine thousand, eight hundred forty".