140218320 has 80 divisors (see below), whose sum is σ = 474201792. Its totient is φ = 33991680.

The previous prime is 140218297. The next prime is 140218333. The reversal of 140218320 is 23812041.

140218320 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 (80).

It is a super-2 number, since 2×140218320² = 39322354527244800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23917 + ... + 29196.

Almost surely, 2^140218320 is an apocalyptic number.

140218320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140218320 is an abundant number, since it is smaller than the sum of its proper divisors (333983472).

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

140218320 is a wasteful number, since it uses less digits than its factorization.

140218320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53140 (or 53134 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 140218320 is about 11841.3816761390. The cubic root of 140218320 is about 519.5191807930.

The spelling of 140218320 in words is "one hundred forty million, two hundred eighteen thousand, three hundred twenty".