202490000 has 50 divisors (see below), whose sum is σ = 490272750. Its totient is φ = 80992000.

The previous prime is 202489997. The next prime is 202490017. The reversal of 202490000 is 94202.

It can be written as a sum of positive squares in 5 ways, for example, as 100560784 + 101929216 = 10028^2 + 10096^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 125 + ... + 20124.

It is an arithmetic number, because the mean of its divisors is an integer number (9805455).

Almost surely, 2^202490000 is an apocalyptic number.

202490000 is a gapful number since it is divisible by the number (20) 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 202490000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245136375).

202490000 is an abundant number, since it is smaller than the sum of its proper divisors (287782750).

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

202490000 is an equidigital number, since it uses as much as digits as its factorization.

202490000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20277 (or 20256 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 202490000 is about 14229.8981022353. The cubic root of 202490000 is about 587.2204796764.

The spelling of 202490000 in words is "two hundred two million, four hundred ninety thousand".