191487402 has 24 divisors (see below), whose sum is σ = 430256736. Its totient is φ = 63828972.

The previous prime is 191487379. The next prime is 191487431. The reversal of 191487402 is 204784191.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 196518 + ... + 197489.

It is an arithmetic number, because the mean of its divisors is an integer number (17927364).

Almost surely, 2^191487402 is an apocalyptic number.

191487402 is an abundant number, since it is smaller than the sum of its proper divisors (238769334).

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

191487402 is an equidigital number, since it uses as much as digits as its factorization.

191487402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394024 (or 394012 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 191487402 is about 13837.8973113692. The cubic root of 191487402 is about 576.3859717752.

The spelling of 191487402 in words is "one hundred ninety-one million, four hundred eighty-seven thousand, four hundred two".