345144978 has 24 divisors (see below), whose sum is σ = 754807248. Its totient is φ = 113972472.

The previous prime is 345144973. The next prime is 345144983. The reversal of 345144978 is 879441543.

It is an interprime number because it is at equal distance from previous prime (345144973) and next prime (345144983).

It is not an unprimeable number, because it can be changed into a prime (345144971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87676 + ... + 91527.

It is an arithmetic number, because the mean of its divisors is an integer number (31450302).

Almost surely, 2^345144978 is an apocalyptic number.

345144978 is an abundant number, since it is smaller than the sum of its proper divisors (409662270).

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

345144978 is a wasteful number, since it uses less digits than its factorization.

345144978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179318 (or 179315 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 345144978 is about 18578.0778876610. The cubic root of 345144978 is about 701.4561375549.

The spelling of 345144978 in words is "three hundred forty-five million, one hundred forty-four thousand, nine hundred seventy-eight".