140812866 has 24 divisors (see below), whose sum is σ = 305800560. Its totient is φ = 46829016.

The previous prime is 140812807. The next prime is 140812871. The reversal of 140812866 is 668218041.

It is a super-2 number, since 2×140812866² = 39656526462267912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140812866.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 856 + ... + 16803.

It is an arithmetic number, because the mean of its divisors is an integer number (12741690).

Almost surely, 2^140812866 is an apocalyptic number.

140812866 is an abundant number, since it is smaller than the sum of its proper divisors (164987694).

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

140812866 is a wasteful number, since it uses less digits than its factorization.

140812866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18110 (or 18107 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 140812866 is about 11866.4597079331. The cubic root of 140812866 is about 520.2524242897.

The spelling of 140812866 in words is "one hundred forty million, eight hundred twelve thousand, eight hundred sixty-six".