34240140 has 72 divisors (see below), whose sum is σ = 113310288. Its totient is φ = 8300160.

The previous prime is 34240117. The next prime is 34240181. The reversal of 34240140 is 4104243.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6667 + ... + 10626.

It is an arithmetic number, because the mean of its divisors is an integer number (1573754).

Almost surely, 2^34240140 is an apocalyptic number.

34240140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

34240140 is an abundant number, since it is smaller than the sum of its proper divisors (79070148).

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

34240140 is a wasteful number, since it uses less digits than its factorization.

34240140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17319 (or 17314 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 34240140 is about 5851.5074980726. The cubic root of 34240140 is about 324.7220977437.

Adding to 34240140 its reverse (4104243), we get a palindrome (38344383).

The spelling of 34240140 in words is "thirty-four million, two hundred forty thousand, one hundred forty".