140738688 has 128 divisors (see below), whose sum is σ = 419505600. Its totient is φ = 46448640.

The previous prime is 140738687. The next prime is 140738707. The reversal of 140738688 is 886837041.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×140738688² = 39614756599922688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140738687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 666903 + ... + 667113.

Almost surely, 2^140738688 is an apocalyptic number.

140738688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140738688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209752800).

140738688 is an abundant number, since it is smaller than the sum of its proper divisors (278766912).

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

140738688 is a wasteful number, since it uses less digits than its factorization.

140738688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 140738688 is about 11863.3337641660. Note that the first 3 decimals coincide. The cubic root of 140738688 is about 520.1610546494.

The spelling of 140738688 in words is "one hundred forty million, seven hundred thirty-eight thousand, six hundred eighty-eight".