140740736 has 32 divisors (see below), whose sum is σ = 284584080. Its totient is φ = 69315840.

The previous prime is 140740727. The next prime is 140740757. The reversal of 140740736 is 637047041.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371 + ... + 16781.

Almost surely, 2^140740736 is an apocalyptic number.

140740736 is a gapful number since it is divisible by the number (16) 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 140740736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142292040).

140740736 is an abundant number, since it is smaller than the sum of its proper divisors (143843344).

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

140740736 is an equidigital number, since it uses as much as digits as its factorization.

140740736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16492 (or 16480 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 140740736 is about 11863.4200802298. The cubic root of 140740736 is about 520.1635777289.

Adding to 140740736 its reverse (637047041), we get a palindrome (777787777).

The spelling of 140740736 in words is "one hundred forty million, seven hundred forty thousand, seven hundred thirty-six".