210004040 has 32 divisors (see below), whose sum is σ = 473014080. Its totient is φ = 83911872.

The previous prime is 210004031. The next prime is 210004049. The reversal of 210004040 is 40400012.

It is an interprime number because it is at equal distance from previous prime (210004031) and next prime (210004049).

It is not an unprimeable number, because it can be changed into a prime (210004049) 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, 45269 + ... + 49691.

It is an arithmetic number, because the mean of its divisors is an integer number (14781690).

Almost surely, 2^210004040 is an apocalyptic number.

210004040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210004040 is an abundant number, since it is smaller than the sum of its proper divisors (263010040).

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

210004040 is a wasteful number, since it uses less digits than its factorization.

210004040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5621 (or 5617 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 210004040 is about 14491.5161387620. The cubic root of 210004040 is about 594.3960069098.

Adding to 210004040 its reverse (40400012), we get a palindrome (250404052).

The spelling of 210004040 in words is "two hundred ten million, four thousand, forty".