190821214 has 8 divisors (see below), whose sum is σ = 287946288. Its totient is φ = 94839120.

The previous prime is 190821193. The next prime is 190821217. The reversal of 190821214 is 412128091.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190821217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285327 + ... + 285994.

It is an arithmetic number, because the mean of its divisors is an integer number (35993286).

Almost surely, 2^190821214 is an apocalyptic number.

190821214 is a deficient number, since it is larger than the sum of its proper divisors (97125074).

190821214 is a wasteful number, since it uses less digits than its factorization.

190821214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571490.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 190821214 is about 13813.8051962520. The cubic root of 190821214 is about 575.7167761883.

The spelling of 190821214 in words is "one hundred ninety million, eight hundred twenty-one thousand, two hundred fourteen".