210268740 has 48 divisors (see below), whose sum is σ = 642277440. Its totient is φ = 50974080.

The previous prime is 210268711. The next prime is 210268757. The reversal of 210268740 is 47862012.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 210268698 and 210268707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158635 + ... + 159954.

It is an arithmetic number, because the mean of its divisors is an integer number (13380780).

Almost surely, 2^210268740 is an apocalyptic number.

210268740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210268740 is an abundant number, since it is smaller than the sum of its proper divisors (432008700).

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

210268740 is a wasteful number, since it uses less digits than its factorization.

210268740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318612 (or 318610 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 210268740 is about 14500.6461924978. The cubic root of 210268740 is about 594.6456379235.

The spelling of 210268740 in words is "two hundred ten million, two hundred sixty-eight thousand, seven hundred forty".