19220250 has 96 divisors (see below), whose sum is σ = 55912896. Its totient is φ = 4384800.

The previous prime is 19220239. The next prime is 19220273. The reversal of 19220250 is 5202291.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36489 + ... + 37011.

It is an arithmetic number, because the mean of its divisors is an integer number (582426).

Almost surely, 2^19220250 is an apocalyptic number.

19220250 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 19220250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27956448).

19220250 is an abundant number, since it is smaller than the sum of its proper divisors (36692646).

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

19220250 is a wasteful number, since it uses less digits than its factorization.

19220250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 19220250 is about 4384.0905556341. The cubic root of 19220250 is about 267.8672859651.

The spelling of 19220250 in words is "nineteen million, two hundred twenty thousand, two hundred fifty".