201072540 has 24 divisors (see below), whose sum is σ = 563003280. Its totient is φ = 53619328.

The previous prime is 201072523. The next prime is 201072551. The reversal of 201072540 is 45270102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675545 + ... + 1675664.

It is an arithmetic number, because the mean of its divisors is an integer number (23458470).

Almost surely, 2^201072540 is an apocalyptic number.

201072540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201072540 is an abundant number, since it is smaller than the sum of its proper divisors (361930740).

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

201072540 is a wasteful number, since it uses less digits than its factorization.

201072540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351221 (or 3351219 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 201072540 is about 14180.0049365295. The cubic root of 201072540 is about 585.8470598403.

The spelling of 201072540 in words is "two hundred one million, seventy-two thousand, five hundred forty".