202999380 has 144 divisors (see below), whose sum is σ = 631290240. Its totient is φ = 48637952.

The previous prime is 202999373. The next prime is 202999387. The reversal of 202999380 is 83999202.

It is an interprime number because it is at equal distance from previous prime (202999373) and next prime (202999387).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202999387) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 398566 + ... + 399074.

It is an arithmetic number, because the mean of its divisors is an integer number (4383960).

Almost surely, 2^202999380 is an apocalyptic number.

202999380 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 202999380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315645120).

202999380 is an abundant number, since it is smaller than the sum of its proper divisors (428290860).

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

202999380 is a wasteful number, since it uses less digits than its factorization.

202999380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 202999380 is about 14247.7850910238. The cubic root of 202999380 is about 587.7124675919.

The spelling of 202999380 in words is "two hundred two million, nine hundred ninety-nine thousand, three hundred eighty".