140644216 has 8 divisors (see below), whose sum is σ = 263707920. Its totient is φ = 70322104.

The previous prime is 140644201. The next prime is 140644237. The reversal of 140644216 is 612446041.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8790256 + ... + 8790271.

It is an arithmetic number, because the mean of its divisors is an integer number (32963490).

Almost surely, 2^140644216 is an apocalyptic number.

It is an amenable number.

140644216 is a deficient number, since it is larger than the sum of its proper divisors (123063704).

140644216 is a wasteful number, since it uses less digits than its factorization.

140644216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17580533 (or 17580529 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 140644216 is about 11859.3514156551. The cubic root of 140644216 is about 520.0446411379.

The spelling of 140644216 in words is "one hundred forty million, six hundred forty-four thousand, two hundred sixteen".