201156340 has 48 divisors (see below), whose sum is σ = 526667904. Its totient is φ = 62697600.

The previous prime is 201156337. The next prime is 201156349. The reversal of 201156340 is 43651102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201156349) 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 15 ways as a sum of consecutive naturals, for example, 63771 + ... + 66850.

It is an arithmetic number, because the mean of its divisors is an integer number (10972248).

Almost surely, 2^201156340 is an apocalyptic number.

201156340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201156340 is an abundant number, since it is smaller than the sum of its proper divisors (325511564).

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

201156340 is a wasteful number, since it uses less digits than its factorization.

201156340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130648 (or 130646 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 201156340 is about 14182.9594937023. The cubic root of 201156340 is about 585.9284353893.

The spelling of 201156340 in words is "two hundred one million, one hundred fifty-six thousand, three hundred forty".