499961280 has 448 divisors, whose sum is σ = 2007290880. Its totient is φ = 102629376.

The previous prime is 499961263. The next prime is 499961291. The reversal of 499961280 is 82169994.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×499961280² = 499922562998476800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5154192 + ... + 5154288.

It is an arithmetic number, because the mean of its divisors is an integer number (4480560).

Almost surely, 2^499961280 is an apocalyptic number.

499961280 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 499961280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003645440).

499961280 is an abundant number, since it is smaller than the sum of its proper divisors (1507329600).

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

499961280 is a wasteful number, since it uses less digits than its factorization.

499961280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 499961280 is about 22359.8139527144. The cubic root of 499961280 is about 793.6800373990.

The spelling of 499961280 in words is "four hundred ninety-nine million, nine hundred sixty-one thousand, two hundred eighty".