345872406 has 16 divisors (see below), whose sum is σ = 754630848. Its totient is φ = 104809800.

The previous prime is 345872393. The next prime is 345872407. The reversal of 345872406 is 604278543.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345872407) 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 7 ways as a sum of consecutive naturals, for example, 2620180 + ... + 2620311.

It is an arithmetic number, because the mean of its divisors is an integer number (47164428).

Almost surely, 2^345872406 is an apocalyptic number.

345872406 is an abundant number, since it is smaller than the sum of its proper divisors (408758442).

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

345872406 is a wasteful number, since it uses less digits than its factorization.

345872406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5240507.

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 345872406 is about 18597.6451735159. The cubic root of 345872406 is about 701.9485883730.

The spelling of 345872406 in words is "three hundred forty-five million, eight hundred seventy-two thousand, four hundred six".