190785450 has 24 divisors (see below), whose sum is σ = 473148288. Its totient is φ = 50876080.

The previous prime is 190785443. The next prime is 190785451. The reversal of 190785450 is 54587091.

It is a junction number, because it is equal to n+sod(n) for n = 190785399 and 190785408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190785451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 635802 + ... + 636101.

It is an arithmetic number, because the mean of its divisors is an integer number (19714512).

Almost surely, 2^190785450 is an apocalyptic number.

190785450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190785450 is an abundant number, since it is smaller than the sum of its proper divisors (282362838).

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

190785450 is a wasteful number, since it uses less digits than its factorization.

190785450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271918 (or 1271913 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 190785450 is about 13812.5106334801. The cubic root of 190785450 is about 575.6808067053.

The spelling of 190785450 in words is "one hundred ninety million, seven hundred eighty-five thousand, four hundred fifty".