497921800 has 48 divisors (see below), whose sum is σ = 1159339860. Its totient is φ = 198881280.

The previous prime is 497921797. The next prime is 497921813. The reversal of 497921800 is 8129794.

It can be written as a sum of positive squares in 6 ways, for example, as 91738084 + 406183716 = 9578^2 + 20154^2 .

It is a super-2 number, since 2×497921800² = 495852237830480000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186072 + ... + 188728.

Almost surely, 2^497921800 is an apocalyptic number.

497921800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

497921800 is an abundant number, since it is smaller than the sum of its proper divisors (661418060).

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

497921800 is a wasteful number, since it uses less digits than its factorization.

497921800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610 (or 3601 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 497921800 is about 22314.1614227378. The cubic root of 497921800 is about 792.5993533119.

The spelling of 497921800 in words is "four hundred ninety-seven million, nine hundred twenty-one thousand, eight hundred".