191428270 has 16 divisors (see below), whose sum is σ = 375895728. Its totient is φ = 69610240.

The previous prime is 191428207. The next prime is 191428271. The reversal of 191428270 is 72824191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191428271) 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 7 ways as a sum of consecutive naturals, for example, 870019 + ... + 870238.

It is an arithmetic number, because the mean of its divisors is an integer number (23493483).

Almost surely, 2^191428270 is an apocalyptic number.

191428270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191428270 is a deficient number, since it is larger than the sum of its proper divisors (184467458).

191428270 is a wasteful number, since it uses less digits than its factorization.

191428270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740275.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 191428270 is about 13835.7605501107. The cubic root of 191428270 is about 576.3266356451.

The spelling of 191428270 in words is "one hundred ninety-one million, four hundred twenty-eight thousand, two hundred seventy".