140038734 has 32 divisors (see below), whose sum is σ = 305959680. Its totient is φ = 42377600.

The previous prime is 140038733. The next prime is 140038757. The reversal of 140038734 is 437830041.

It is a super-2 number, since 2×140038734² = 39221694040645512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140038733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89047 + ... + 90605.

It is an arithmetic number, because the mean of its divisors is an integer number (9561240).

Almost surely, 2^140038734 is an apocalyptic number.

140038734 is an abundant number, since it is smaller than the sum of its proper divisors (165920946).

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

140038734 is a wasteful number, since it uses less digits than its factorization.

140038734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 140038734 is about 11833.7962632454. The cubic root of 140038734 is about 519.2972929282.

Adding to 140038734 its reverse (437830041), we get a palindrome (577868775).

The spelling of 140038734 in words is "one hundred forty million, thirty-eight thousand, seven hundred thirty-four".