340440217420 has 24 divisors (see below), whose sum is σ = 752552060400. Its totient is φ = 129008924352.

The previous prime is 340440217379. The next prime is 340440217451. The reversal of 340440217420 is 24712044043.

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, 447947275 + ... + 447948034.

It is an arithmetic number, because the mean of its divisors is an integer number (31356335850).

Almost surely, 2^340440217420 is an apocalyptic number.

It is an amenable number.

340440217420 is an abundant number, since it is smaller than the sum of its proper divisors (412111842980).

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

340440217420 is a wasteful number, since it uses less digits than its factorization.

340440217420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895895337 (or 895895335 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 31.

The spelling of 340440217420 in words is "three hundred forty billion, four hundred forty million, two hundred seventeen thousand, four hundred twenty".