19220630 has 32 divisors (see below), whose sum is σ = 40648608. Its totient is φ = 6451200.

The previous prime is 19220573. The next prime is 19220633. The reversal of 19220630 is 3602291.

It is a junction number, because it is equal to n+sod(n) for n = 19220596 and 19220605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19220633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5291 + ... + 8150.

It is an arithmetic number, because the mean of its divisors is an integer number (1270269).

Almost surely, 2^19220630 is an apocalyptic number.

19220630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19220630 is an abundant number, since it is smaller than the sum of its proper divisors (21427978).

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

19220630 is a wasteful number, since it uses less digits than its factorization.

19220630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13472.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 19220630 is about 4384.1338939407. The cubic root of 19220630 is about 267.8690512716.

The spelling of 19220630 in words is "nineteen million, two hundred twenty thousand, six hundred thirty".