19774230 has 128 divisors (see below), whose sum is σ = 59719680. Its totient is φ = 4085760.

The previous prime is 19774229. The next prime is 19774241. The reversal of 19774230 is 3247791.

It is a junction number, because it is equal to n+sod(n) for n = 19774191 and 19774200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 103435 + ... + 103625.

It is an arithmetic number, because the mean of its divisors is an integer number (466560).

Almost surely, 2^19774230 is an apocalyptic number.

19774230 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 19774230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29859840).

19774230 is an abundant number, since it is smaller than the sum of its proper divisors (39945450).

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

19774230 is a wasteful number, since it uses less digits than its factorization.

19774230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 19774230 is about 4446.8224610389. The cubic root of 19774230 is about 270.4165039440.

The spelling of 19774230 in words is "nineteen million, seven hundred seventy-four thousand, two hundred thirty".