202340340 has 36 divisors (see below), whose sum is σ = 613766244. Its totient is φ = 53957376.

The previous prime is 202340321. The next prime is 202340353. The reversal of 202340340 is 43043202.

It can be written as a sum of positive squares in 2 ways, for example, as 23155344 + 179184996 = 4812^2 + 13386^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×202340340² = 81883226382631200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 561877 + ... + 562236.

Almost surely, 2^202340340 is an apocalyptic number.

202340340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202340340 is an abundant number, since it is smaller than the sum of its proper divisors (411425904).

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

202340340 is a wasteful number, since it uses less digits than its factorization.

202340340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124128 (or 1124123 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 202340340 is about 14224.6384839826. The cubic root of 202340340 is about 587.0757728145.

Adding to 202340340 its reverse (43043202), we get a palindrome (245383542).

The spelling of 202340340 in words is "two hundred two million, three hundred forty thousand, three hundred forty".