190200420 has 96 divisors (see below), whose sum is σ = 626572800. Its totient is φ = 47734272.

The previous prime is 190200389. The next prime is 190200421. The reversal of 190200420 is 24002091.

190200420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 190200393 and 190200402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190200421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1180 + ... + 19539.

It is an arithmetic number, because the mean of its divisors is an integer number (6526800).

Almost surely, 2^190200420 is an apocalyptic number.

190200420 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 190200420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313286400).

190200420 is an abundant number, since it is smaller than the sum of its proper divisors (436372380).

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

190200420 is a wasteful number, since it uses less digits than its factorization.

190200420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20754 (or 20746 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 190200420 is about 13791.3168334282. The cubic root of 190200420 is about 575.0917761510.

The spelling of 190200420 in words is "one hundred ninety million, two hundred thousand, four hundred twenty".