201580440 has 128 divisors (see below), whose sum is σ = 629717760. Its totient is φ = 51577344.

The previous prime is 201580411. The next prime is 201580471. The reversal of 201580440 is 44085102.

201580440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 201580440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368247 + ... + 368793.

It is an arithmetic number, because the mean of its divisors is an integer number (4919670).

Almost surely, 2^201580440 is an apocalyptic number.

201580440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201580440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314858880).

201580440 is an abundant number, since it is smaller than the sum of its proper divisors (428137320).

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

201580440 is a wasteful number, since it uses less digits than its factorization.

201580440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 201580440 is about 14197.9026620131. The cubic root of 201580440 is about 586.3399193471.

The spelling of 201580440 in words is "two hundred one million, five hundred eighty thousand, four hundred forty".