201691392 has 72 divisors (see below), whose sum is σ = 613494336. Its totient is φ = 57624576.

The previous prime is 201691379. The next prime is 201691409. The reversal of 201691392 is 293196102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13383 + ... + 24134.

Almost surely, 2^201691392 is an apocalyptic number.

It is an amenable number.

201691392 is an abundant number, since it is smaller than the sum of its proper divisors (411802944).

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

201691392 is an equidigital number, since it uses as much as digits as its factorization.

201691392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37543 (or 37529 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 201691392 is about 14201.8094621777. The cubic root of 201691392 is about 586.4474755078.

The spelling of 201691392 in words is "two hundred one million, six hundred ninety-one thousand, three hundred ninety-two".