210745020 has 24 divisors (see below), whose sum is σ = 590086224. Its totient is φ = 56198656.

The previous prime is 210745009. The next prime is 210745033. The reversal of 210745020 is 20547012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1756149 + ... + 1756268.

It is an arithmetic number, because the mean of its divisors is an integer number (24586926).

Almost surely, 2^210745020 is an apocalyptic number.

210745020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210745020 is an abundant number, since it is smaller than the sum of its proper divisors (379341204).

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

210745020 is a wasteful number, since it uses less digits than its factorization.

210745020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512429 (or 3512427 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 210745020 is about 14517.0596196337. The cubic root of 210745020 is about 595.0942768956.

The spelling of 210745020 in words is "two hundred ten million, seven hundred forty-five thousand, twenty".