19942200 has 120 divisors (see below), whose sum is σ = 69318480. Its totient is φ = 5313600.

The previous prime is 19942199. The next prime is 19942217. The reversal of 19942200 is 224991.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 15585 + ... + 16815.

It is an arithmetic number, because the mean of its divisors is an integer number (577654).

Almost surely, 2^19942200 is an apocalyptic number.

19942200 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 19942200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34659240).

19942200 is an abundant number, since it is smaller than the sum of its proper divisors (49376280).

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

19942200 is a wasteful number, since it uses less digits than its factorization.

19942200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259 (or 1241 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 19942200 is about 4465.6690428199. The cubic root of 19942200 is about 271.1800204562.

The spelling of 19942200 in words is "nineteen million, nine hundred forty-two thousand, two hundred".