193409420 has 24 divisors (see below), whose sum is σ = 406423248. Its totient is φ = 77313600.

The previous prime is 193409413. The next prime is 193409429. The reversal of 193409420 is 24904391.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (193409429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52850 + ... + 56390.

It is an arithmetic number, because the mean of its divisors is an integer number (16934302).

Almost surely, 2^193409420 is an apocalyptic number.

193409420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193409420 is an abundant number, since it is smaller than the sum of its proper divisors (213013828).

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

193409420 is a wasteful number, since it uses less digits than its factorization.

193409420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6281 (or 6279 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 193409420 is about 13907.1715312640. The cubic root of 193409420 is about 578.3080098280.

The spelling of 193409420 in words is "one hundred ninety-three million, four hundred nine thousand, four hundred twenty".