344907878 has 24 divisors (see below), whose sum is σ = 595171632. Its totient is φ = 146847744.

The previous prime is 344907877. The next prime is 344907887. The reversal of 344907878 is 878709443.

It is a super-2 number, since 2×344907878² = 237922888612925768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344907877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 924500 + ... + 924872.

It is an arithmetic number, because the mean of its divisors is an integer number (24798818).

Almost surely, 2^344907878 is an apocalyptic number.

344907878 is a deficient number, since it is larger than the sum of its proper divisors (250263754).

344907878 is an equidigital number, since it uses as much as digits as its factorization.

344907878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 50.

The square root of 344907878 is about 18571.6956145636. The cubic root of 344907878 is about 701.2954771955.

The spelling of 344907878 in words is "three hundred forty-four million, nine hundred seven thousand, eight hundred seventy-eight".