191428150 has 24 divisors (see below), whose sum is σ = 356550840. Its totient is φ = 76464960.

The previous prime is 191428147. The next prime is 191428151. The reversal of 191428150 is 51824191.

It is a happy number.

It is a super-2 number, since 2×191428150² = 73289473224845000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191428151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40722 + ... + 45178.

It is an arithmetic number, because the mean of its divisors is an integer number (14856285).

Almost surely, 2^191428150 is an apocalyptic number.

191428150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191428150 is a deficient number, since it is larger than the sum of its proper divisors (165122690).

191428150 is a wasteful number, since it uses less digits than its factorization.

191428150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5328 (or 5323 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 191428150 is about 13835.7562135215. The cubic root of 191428150 is about 576.3265152184.

The spelling of 191428150 in words is "one hundred ninety-one million, four hundred twenty-eight thousand, one hundred fifty".