201472640 has 64 divisors (see below), whose sum is σ = 502623360. Its totient is φ = 77079552.

The previous prime is 201472639. The next prime is 201472651. The reversal of 201472640 is 46274102.

It is a tau number, because it is divible by the number of its divisors (64).

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, 7877 + ... + 21563.

It is an arithmetic number, because the mean of its divisors is an integer number (7853490).

Almost surely, 2^201472640 is an apocalyptic number.

201472640 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 201472640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251311680).

201472640 is an abundant number, since it is smaller than the sum of its proper divisors (301150720).

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

201472640 is a wasteful number, since it uses less digits than its factorization.

201472640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13729 (or 13717 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 201472640 is about 14194.1058189658. The cubic root of 201472640 is about 586.2353809076.

The spelling of 201472640 in words is "two hundred one million, four hundred seventy-two thousand, six hundred forty".