345127978 has 8 divisors (see below), whose sum is σ = 557514468. Its totient is φ = 159289824.

The previous prime is 345127973. The next prime is 345127987. The reversal of 345127978 is 879721543.

It can be written as a sum of positive squares in 2 ways, for example, as 333683289 + 11444689 = 18267^2 + 3383^2 .

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

It is a super-2 number, since 2×345127978² = 238226642396736968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345127973) 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, 6637051 + ... + 6637102.

Almost surely, 2^345127978 is an apocalyptic number.

345127978 is a deficient number, since it is larger than the sum of its proper divisors (212386490).

345127978 is a wasteful number, since it uses less digits than its factorization.

345127978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13274168.

The product of its digits is 423360, while the sum is 46.

The square root of 345127978 is about 18577.6203535329. The cubic root of 345127978 is about 701.4446207036. Note that the first 3 decimals are identical.

The spelling of 345127978 in words is "three hundred forty-five million, one hundred twenty-seven thousand, nine hundred seventy-eight".