140647266 has 40 divisors (see below), whose sum is σ = 321119964. Its totient is φ = 45995040.

The previous prime is 140647223. The next prime is 140647267. The reversal of 140647266 is 662746041.

140647266 is a `hidden beast` number, since 1 + 4 + 0 + 647 + 2 + 6 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 130439241 + 10208025 = 11421^2 + 3195^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140647266.

It is not an unprimeable number, because it can be changed into a prime (140647267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 396 + ... + 16776.

Almost surely, 2^140647266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140647266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160559982).

140647266 is an abundant number, since it is smaller than the sum of its proper divisors (180472698).

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

140647266 is a wasteful number, since it uses less digits than its factorization.

140647266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16448 (or 16439 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 140647266 is about 11859.4800054640. The cubic root of 140647266 is about 520.0484003272.

The spelling of 140647266 in words is "one hundred forty million, six hundred forty-seven thousand, two hundred sixty-six".