202105380 has 24 divisors (see below), whose sum is σ = 565895232. Its totient is φ = 53894752.

The previous prime is 202105369. The next prime is 202105411. The reversal of 202105380 is 83501202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684152 + ... + 1684271.

It is an arithmetic number, because the mean of its divisors is an integer number (23578968).

Almost surely, 2^202105380 is an apocalyptic number.

202105380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202105380 is an abundant number, since it is smaller than the sum of its proper divisors (363789852).

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

202105380 is a wasteful number, since it uses less digits than its factorization.

202105380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368435 (or 3368433 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 202105380 is about 14216.3771756380. The cubic root of 202105380 is about 586.8484450190.

Adding to 202105380 its reverse (83501202), we get a palindrome (285606582).

The spelling of 202105380 in words is "two hundred two million, one hundred five thousand, three hundred eighty".