210387380 has 72 divisors (see below), whose sum is σ = 541044000. Its totient is φ = 68330304.

The previous prime is 210387329. The next prime is 210387391. The reversal of 210387380 is 83783012.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 12971 + ... + 24269.

It is an arithmetic number, because the mean of its divisors is an integer number (7514500).

Almost surely, 2^210387380 is an apocalyptic number.

210387380 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 210387380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270522000).

210387380 is an abundant number, since it is smaller than the sum of its proper divisors (330656620).

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

210387380 is a wasteful number, since it uses less digits than its factorization.

210387380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11341 (or 11332 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 210387380 is about 14504.7364677887. The cubic root of 210387380 is about 594.7574559301.

The spelling of 210387380 in words is "two hundred ten million, three hundred eighty-seven thousand, three hundred eighty".