19309230 has 48 divisors (see below), whose sum is σ = 50909040. Its totient is φ = 5076864.

The previous prime is 19309219. The next prime is 19309247. The reversal of 19309230 is 3290391.

It is a junction number, because it is equal to n+sod(n) for n = 19309194 and 19309203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5101 + ... + 8039.

It is an arithmetic number, because the mean of its divisors is an integer number (1060605).

Almost surely, 2^19309230 is an apocalyptic number.

19309230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19309230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25454520).

19309230 is an abundant number, since it is smaller than the sum of its proper divisors (31599810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19309230 is a wasteful number, since it uses less digits than its factorization.

19309230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025 (or 3022 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 19309230 is about 4394.2268944605. The cubic root of 19309230 is about 268.2800128956.

The spelling of 19309230 in words is "nineteen million, three hundred nine thousand, two hundred thirty".