19958230 has 16 divisors (see below), whose sum is σ = 35977680. Its totient is φ = 7971552.

The previous prime is 19958219. The next prime is 19958231. The reversal of 19958230 is 3285991.

It is a self number, because there is not a number n which added to its sum of digits gives 19958230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19958231) 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, 9757 + ... + 11623.

It is an arithmetic number, because the mean of its divisors is an integer number (2248605).

Almost surely, 2^19958230 is an apocalyptic number.

19958230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19958230 is a deficient number, since it is larger than the sum of its proper divisors (16019450).

19958230 is a wasteful number, since it uses less digits than its factorization.

19958230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 19958230 is about 4467.4634861407. The cubic root of 19958230 is about 271.2526612465.

The spelling of 19958230 in words is "nineteen million, nine hundred fifty-eight thousand, two hundred thirty".