262206640 has 40 divisors (see below), whose sum is σ = 645494400. Its totient is φ = 98712576.

The previous prime is 262206569. The next prime is 262206641. The reversal of 262206640 is 46602262.

262206640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 262206599 and 262206608.

It is not an unprimeable number, because it can be changed into a prime (262206641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95040 + ... + 97759.

It is an arithmetic number, because the mean of its divisors is an integer number (16137360).

Almost surely, 2^262206640 is an apocalyptic number.

262206640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

262206640 is an abundant number, since it is smaller than the sum of its proper divisors (383287760).

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

262206640 is a wasteful number, since it uses less digits than its factorization.

262206640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192829 (or 192823 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 262206640 is about 16192.7959290544. The cubic root of 262206640 is about 640.0509725027.

The spelling of 262206640 in words is "two hundred sixty-two million, two hundred six thousand, six hundred forty".