201981276 has 60 divisors (see below), whose sum is σ = 603457008. Its totient is φ = 57708288.

The previous prime is 201981253. The next prime is 201981281. The reversal of 201981276 is 672189102.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 201981276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42261 + ... + 46796.

Almost surely, 2^201981276 is an apocalyptic number.

It is an amenable number.

201981276 is an abundant number, since it is smaller than the sum of its proper divisors (401475732).

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

201981276 is a wasteful number, since it uses less digits than its factorization.

201981276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89080 (or 89069 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 201981276 is about 14212.0116802654. The cubic root of 201981276 is about 586.7283011749.

The spelling of 201981276 in words is "two hundred one million, nine hundred eighty-one thousand, two hundred seventy-six".