340648820 has 24 divisors (see below), whose sum is σ = 716131584. Its totient is φ = 136113056.

The previous prime is 340648813. The next prime is 340648901. The reversal of 340648820 is 28846043.

340648820 = 1625² + 1626² + ... + 1744².

It is a congruent number.

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, 10997 + ... + 28323.

It is an arithmetic number, because the mean of its divisors is an integer number (29838816).

Almost surely, 2^340648820 is an apocalyptic number.

It is an amenable number.

340648820 is an abundant number, since it is smaller than the sum of its proper divisors (375482764).

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

340648820 is a wasteful number, since it uses less digits than its factorization.

340648820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18319 (or 18317 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 340648820 is about 18456.6741315980. The cubic root of 340648820 is about 698.3968892485.

The spelling of 340648820 in words is "three hundred forty million, six hundred forty-eight thousand, eight hundred twenty".