497978208 has 144 divisors (see below), whose sum is σ = 1743015456. Its totient is φ = 131328000.

The previous prime is 497978189. The next prime is 497978281. The reversal of 497978208 is 802879794.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16708 + ... + 35708.

It is an arithmetic number, because the mean of its divisors is an integer number (12104274).

Almost surely, 2^497978208 is an apocalyptic number.

497978208 is a gapful number since it is divisible by the number (48) 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 497978208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (871507728).

497978208 is an abundant number, since it is smaller than the sum of its proper divisors (1245037248).

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

497978208 is a wasteful number, since it uses less digits than its factorization.

497978208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19037 (or 19026 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 497978208 is about 22315.4253376448. The cubic root of 497978208 is about 792.6292825472.

The spelling of 497978208 in words is "four hundred ninety-seven million, nine hundred seventy-eight thousand, two hundred eight".