194428310 has 8 divisors (see below), whose sum is σ = 349970976. Its totient is φ = 77771320.

The previous prime is 194428291. The next prime is 194428313. The reversal of 194428310 is 13824491.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×194428310² = 75604735458912200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194428313) 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 3 ways as a sum of consecutive naturals, for example, 9721406 + ... + 9721425.

It is an arithmetic number, because the mean of its divisors is an integer number (43746372).

Almost surely, 2^194428310 is an apocalyptic number.

194428310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194428310 is a deficient number, since it is larger than the sum of its proper divisors (155542666).

194428310 is a wasteful number, since it uses less digits than its factorization.

194428310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19442838.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 194428310 is about 13943.7552330784. The cubic root of 194428310 is about 579.3217497734.

The spelling of 194428310 in words is "one hundred ninety-four million, four hundred twenty-eight thousand, three hundred ten".