340881578 has 8 divisors (see below), whose sum is σ = 511513572. Its totient is φ = 170377056.

The previous prime is 340881577. The next prime is 340881601. The reversal of 340881578 is 875188043.

It can be written as a sum of positive squares in 2 ways, for example, as 338670409 + 2211169 = 18403^2 + 1487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×340881578³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (340881577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24875 + ... + 36062.

Almost surely, 2^340881578 is an apocalyptic number.

340881578 is a deficient number, since it is larger than the sum of its proper divisors (170631994).

340881578 is a wasteful number, since it uses less digits than its factorization.

340881578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63736.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 340881578 is about 18462.9785787668. The cubic root of 340881578 is about 698.5559195496. Note that the first 3 decimals are identical.

The spelling of 340881578 in words is "three hundred forty million, eight hundred eighty-one thousand, five hundred seventy-eight".