210532340 has 24 divisors (see below), whose sum is σ = 461341440. Its totient is φ = 80551328.

The previous prime is 210532321. The next prime is 210532349. The reversal of 210532340 is 43235012.

It is a happy number.

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 (210532349) 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, 228380 + ... + 229299.

It is an arithmetic number, because the mean of its divisors is an integer number (19222560).

Almost surely, 2^210532340 is an apocalyptic number.

210532340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210532340 is an abundant number, since it is smaller than the sum of its proper divisors (250809100).

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

210532340 is a wasteful number, since it uses less digits than its factorization.

210532340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457711 (or 457709 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 210532340 is about 14509.7325957441. The cubic root of 210532340 is about 594.8940234483.

Adding to 210532340 its reverse (43235012), we get a palindrome (253767352).

The spelling of 210532340 in words is "two hundred ten million, five hundred thirty-two thousand, three hundred forty".