345044340 has 48 divisors (see below), whose sum is σ = 1073472960. Its totient is φ = 92011680.

The previous prime is 345044333. The next prime is 345044347. The reversal of 345044340 is 43440543.

It is an interprime number because it is at equal distance from previous prime (345044333) and next prime (345044347).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345044347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318946 + ... + 320025.

It is an arithmetic number, because the mean of its divisors is an integer number (22364020).

Almost surely, 2^345044340 is an apocalyptic number.

345044340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345044340 is an abundant number, since it is smaller than the sum of its proper divisors (728428620).

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

345044340 is a wasteful number, since it uses less digits than its factorization.

345044340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638989 (or 638981 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 345044340 is about 18575.3691753354. The cubic root of 345044340 is about 701.3879536422.

Adding to 345044340 its reverse (43440543), we get a palindrome (388484883).

The spelling of 345044340 in words is "three hundred forty-five million, forty-four thousand, three hundred forty".