210328445 has 16 divisors (see below), whose sum is σ = 272453760. Its totient is φ = 155394624.

The previous prime is 210328441. The next prime is 210328457. The reversal of 210328445 is 544823012.

It is a happy number.

It is not a de Polignac number, because 210328445 - 2² = 210328441 is a prime.

It is a super-2 number, since 2×210328445² = 88476109552236050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210328441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28199 + ... + 34868.

It is an arithmetic number, because the mean of its divisors is an integer number (17028360).

Almost surely, 2^210328445 is an apocalyptic number.

It is an amenable number.

210328445 is a deficient number, since it is larger than the sum of its proper divisors (62125315).

210328445 is a wasteful number, since it uses less digits than its factorization.

210328445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63124.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 210328445 is about 14502.7047477359. The cubic root of 210328445 is about 594.7019150446.

The spelling of 210328445 in words is "two hundred ten million, three hundred twenty-eight thousand, four hundred forty-five".