19790230 has 16 divisors (see below), whose sum is σ = 36207504. Its totient is φ = 7786080.

The previous prime is 19790213. The next prime is 19790233. The reversal of 19790230 is 3209791.

It is a junction number, because it is equal to n+sod(n) for n = 19790192 and 19790201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19790233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15612 + ... + 16831.

It is an arithmetic number, because the mean of its divisors is an integer number (2262969).

Almost surely, 2^19790230 is an apocalyptic number.

19790230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19790230 is a deficient number, since it is larger than the sum of its proper divisors (16417274).

19790230 is a wasteful number, since it uses less digits than its factorization.

19790230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32511.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 19790230 is about 4448.6211346888. The cubic root of 19790230 is about 270.4894186692.

The spelling of 19790230 in words is "nineteen million, seven hundred ninety thousand, two hundred thirty".