201921792 has 72 divisors (see below), whose sum is σ = 541038624. Its totient is φ = 66852864.

The previous prime is 201921787. The next prime is 201921793. The reversal of 201921792 is 297129102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201921793) by changing a digit.

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, 124378 + ... + 125990.

Almost surely, 2^201921792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201921792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270519312).

201921792 is an abundant number, since it is smaller than the sum of its proper divisors (339116832).

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

201921792 is a wasteful number, since it uses less digits than its factorization.

201921792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795 (or 1781 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 201921792 is about 14209.9187893527. The cubic root of 201921792 is about 586.6706978603.

The spelling of 201921792 in words is "two hundred one million, nine hundred twenty-one thousand, seven hundred ninety-two".