202140380 has 24 divisors (see below), whose sum is σ = 457148832. Its totient is φ = 74636352.

The previous prime is 202140371. The next prime is 202140383. The reversal of 202140380 is 83041202.

It is a super-3 number, since 3×202140380³ (a number of 26 digits) contains 333 as substring.

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 (202140383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388472 + ... + 388991.

It is an arithmetic number, because the mean of its divisors is an integer number (19047868).

Almost surely, 2^202140380 is an apocalyptic number.

202140380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202140380 is an abundant number, since it is smaller than the sum of its proper divisors (255008452).

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

202140380 is a wasteful number, since it uses less digits than its factorization.

202140380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777485 (or 777483 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 202140380 is about 14217.6080970042. The cubic root of 202140380 is about 586.8823192781.

Adding to 202140380 its reverse (83041202), we get a palindrome (285181582).

The spelling of 202140380 in words is "two hundred two million, one hundred forty thousand, three hundred eighty".