19772230 has 8 divisors (see below), whose sum is σ = 35590032. Its totient is φ = 7908888.

The previous prime is 19772227. The next prime is 19772237. The reversal of 19772230 is 3227791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 19772192 and 19772201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19772237) 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 3 ways as a sum of consecutive naturals, for example, 988602 + ... + 988621.

It is an arithmetic number, because the mean of its divisors is an integer number (4448754).

Almost surely, 2^19772230 is an apocalyptic number.

19772230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19772230 is a deficient number, since it is larger than the sum of its proper divisors (15817802).

19772230 is a wasteful number, since it uses less digits than its factorization.

19772230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977230.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 19772230 is about 4446.5975756751. The cubic root of 19772230 is about 270.4073868382.

It can be divided in two parts, 19772 and 230, that added together give a palindrome (20002).

The spelling of 19772230 in words is "nineteen million, seven hundred seventy-two thousand, two hundred thirty".