210748940 has 24 divisors (see below), whose sum is σ = 451991232. Its totient is φ = 82505600.

The previous prime is 210748939. The next prime is 210748973. The reversal of 210748940 is 49847012.

210748940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×210748940² = 88830231422247200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210748940.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111161 + ... + 113040.

It is an arithmetic number, because the mean of its divisors is an integer number (18832968).

Almost surely, 2^210748940 is an apocalyptic number.

210748940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210748940 is an abundant number, since it is smaller than the sum of its proper divisors (241242292).

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

210748940 is a wasteful number, since it uses less digits than its factorization.

210748940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224257 (or 224255 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 210748940 is about 14517.1946325728. The cubic root of 210748940 is about 595.0979665914.

The spelling of 210748940 in words is "two hundred ten million, seven hundred forty-eight thousand, nine hundred forty".