340520240 has 40 divisors (see below), whose sum is σ = 795501168. Its totient is φ = 135555840.

The previous prime is 340520231. The next prime is 340520303. The reversal of 340520240 is 42025043.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6794 + ... + 26966.

Almost surely, 2^340520240 is an apocalyptic number.

It is an amenable number.

340520240 is an abundant number, since it is smaller than the sum of its proper divisors (454980928).

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

340520240 is a wasteful number, since it uses less digits than its factorization.

340520240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20397 (or 20391 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 340520240 is about 18453.1905100446. The cubic root of 340520240 is about 698.3090067846.

Adding to 340520240 its reverse (42025043), we get a palindrome (382545283).

The spelling of 340520240 in words is "three hundred forty million, five hundred twenty thousand, two hundred forty".