340144420 has 48 divisors (see below), whose sum is σ = 890563968. Its totient is φ = 106018560.

The previous prime is 340144417. The next prime is 340144421. The reversal of 340144420 is 24441043.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 340144391 and 340144400.

It is not an unprimeable number, because it can be changed into a prime (340144421) 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, 108897 + ... + 111976.

It is an arithmetic number, because the mean of its divisors is an integer number (18553416).

Almost surely, 2^340144420 is an apocalyptic number.

It is an amenable number.

340144420 is an abundant number, since it is smaller than the sum of its proper divisors (550419548).

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

340144420 is a wasteful number, since it uses less digits than its factorization.

340144420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220900 (or 220898 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 340144420 is about 18443.0046359046. The cubic root of 340144420 is about 698.0520126647.

Adding to 340144420 its reverse (24441043), we get a palindrome (364585463).

The spelling of 340144420 in words is "three hundred forty million, one hundred forty-four thousand, four hundred twenty".