201730390 has 16 divisors (see below), whose sum is σ = 368090208. Its totient is φ = 79586496.

The previous prime is 201730387. The next prime is 201730393. The reversal of 201730390 is 93037102.

It is an interprime number because it is at equal distance from previous prime (201730387) and next prime (201730393).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201730393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137442 + ... + 138901.

It is an arithmetic number, because the mean of its divisors is an integer number (23005638).

Almost surely, 2^201730390 is an apocalyptic number.

201730390 is a deficient number, since it is larger than the sum of its proper divisors (166359818).

201730390 is a wasteful number, since it uses less digits than its factorization.

201730390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276423.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 201730390 is about 14203.1823898731. The cubic root of 201730390 is about 586.4852705513.

Adding to 201730390 its reverse (93037102), we get a palindrome (294767492).

The spelling of 201730390 in words is "two hundred one million, seven hundred thirty thousand, three hundred ninety".