219223740 has 48 divisors (see below), whose sum is σ = 619581312. Its totient is φ = 57911616.

The previous prime is 219223727. The next prime is 219223747. The reversal of 219223740 is 47322912.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 219223698 and 219223707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219223747) 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 15 ways as a sum of consecutive naturals, for example, 10654 + ... + 23493.

It is an arithmetic number, because the mean of its divisors is an integer number (12907944).

Almost surely, 2^219223740 is an apocalyptic number.

219223740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219223740 is an abundant number, since it is smaller than the sum of its proper divisors (400357572).

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

219223740 is a wasteful number, since it uses less digits than its factorization.

219223740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34266 (or 34264 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 219223740 is about 14806.2061312140. The cubic root of 219223740 is about 602.9702165379.

The spelling of 219223740 in words is "two hundred nineteen million, two hundred twenty-three thousand, seven hundred forty".