340067840 has 120 divisors (see below), whose sum is σ = 948836592. Its totient is φ = 116551680.

The previous prime is 340067821. The next prime is 340067869. The reversal of 340067840 is 48760043.

It is a happy number.

It is a super-2 number, since 2×340067840² = 231292271604531200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 340067797 and 340067806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124085 + ... + 126795.

Almost surely, 2^340067840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340067840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474418296).

340067840 is an abundant number, since it is smaller than the sum of its proper divisors (608768752).

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

340067840 is an equidigital number, since it uses as much as digits as its factorization.

340067840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 340067840 is about 18440.9283931151. The cubic root of 340067840 is about 697.9996223346. Note that the first 3 decimals are identical.

The spelling of 340067840 in words is "three hundred forty million, sixty-seven thousand, eight hundred forty".