340140440 has 48 divisors (see below), whose sum is σ = 772986240. Its totient is φ = 134702400.

The previous prime is 340140431. The next prime is 340140461. The reversal of 340140440 is 44041043.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1611935 + ... + 1612145.

It is an arithmetic number, because the mean of its divisors is an integer number (16103880).

Almost surely, 2^340140440 is an apocalyptic number.

It is an amenable number.

340140440 is an abundant number, since it is smaller than the sum of its proper divisors (432845800).

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

340140440 is a wasteful number, since it uses less digits than its factorization.

340140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 340140440 is about 18442.8967355999. The cubic root of 340140440 is about 698.0492900390.

Adding to 340140440 its reverse (44041043), we get a palindrome (384181483).

The spelling of 340140440 in words is "three hundred forty million, one hundred forty thousand, four hundred forty".