19220620 has 48 divisors (see below), whose sum is σ = 43142400. Its totient is φ = 7176960.

The previous prime is 19220573. The next prime is 19220633. The reversal of 19220620 is 2602291.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19220591 and 19220600.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17446 + ... + 18514.

It is an arithmetic number, because the mean of its divisors is an integer number (898800).

Almost surely, 2^19220620 is an apocalyptic number.

19220620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19220620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21571200).

19220620 is an abundant number, since it is smaller than the sum of its proper divisors (23921780).

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

19220620 is a wasteful number, since it uses less digits than its factorization.

19220620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 19220620 is about 4384.1327534645. The cubic root of 19220620 is about 267.8690048165.

The spelling of 19220620 in words is "nineteen million, two hundred twenty thousand, six hundred twenty".