210013240 has 96 divisors (see below), whose sum is σ = 514790640. Its totient is φ = 76830720.

The previous prime is 210013231. The next prime is 210013259. The reversal of 210013240 is 42310012.

It is a self number, because there is not a number n which added to its sum of digits gives 210013240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2530239 + ... + 2530321.

Almost surely, 2^210013240 is an apocalyptic number.

210013240 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 210013240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257395320).

210013240 is an abundant number, since it is smaller than the sum of its proper divisors (304777400).

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

210013240 is a wasteful number, since it uses less digits than its factorization.

210013240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 210013240 is about 14491.8335623895. The cubic root of 210013240 is about 594.4046866847.

Adding to 210013240 its reverse (42310012), we get a palindrome (252323252).

The spelling of 210013240 in words is "two hundred ten million, thirteen thousand, two hundred forty".