19745230 has 16 divisors (see below), whose sum is σ = 36767520. Its totient is φ = 7625632.

The previous prime is 19745221. The next prime is 19745239. The reversal of 19745230 is 3254791.

It is an interprime number because it is at equal distance from previous prime (19745221) and next prime (19745239).

It is a junction number, because it is equal to n+sod(n) for n = 19745192 and 19745201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19745239) by changing a digit.

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, 33754 + ... + 34333.

It is an arithmetic number, because the mean of its divisors is an integer number (2297970).

Almost surely, 2^19745230 is an apocalyptic number.

19745230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19745230 is a deficient number, since it is larger than the sum of its proper divisors (17022290).

19745230 is a wasteful number, since it uses less digits than its factorization.

19745230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68123.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 19745230 is about 4443.5605093213. The cubic root of 19745230 is about 270.2842456908.

The spelling of 19745230 in words is "nineteen million, seven hundred forty-five thousand, two hundred thirty".