202144340 has 24 divisors (see below), whose sum is σ = 426710760. Its totient is φ = 80437248.

The previous prime is 202144339. The next prime is 202144343. The reversal of 202144340 is 43441202.

It can be written as a sum of positive squares in 4 ways, for example, as 17673616 + 184470724 = 4204^2 + 13582^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202144343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22325 + ... + 30044.

It is an arithmetic number, because the mean of its divisors is an integer number (17779615).

Almost surely, 2^202144340 is an apocalyptic number.

202144340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202144340 is an abundant number, since it is smaller than the sum of its proper divisors (224566420).

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

202144340 is a wasteful number, since it uses less digits than its factorization.

202144340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52571 (or 52569 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 202144340 is about 14217.7473602537. The cubic root of 202144340 is about 586.8861516623.

Adding to 202144340 its reverse (43441202), we get a palindrome (245585542).

The spelling of 202144340 in words is "two hundred two million, one hundred forty-four thousand, three hundred forty".