345225140 has 24 divisors (see below), whose sum is σ = 780740520. Its totient is φ = 127467648.

The previous prime is 345225131. The next prime is 345225151. The reversal of 345225140 is 41522543.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37503376 + 307721764 = 6124^2 + 17542^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663635 + ... + 664154.

It is an arithmetic number, because the mean of its divisors is an integer number (32530855).

Almost surely, 2^345225140 is an apocalyptic number.

It is an amenable number.

345225140 is an abundant number, since it is smaller than the sum of its proper divisors (435515380).

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

345225140 is a wasteful number, since it uses less digits than its factorization.

345225140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327811 (or 1327809 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 345225140 is about 18580.2351976502. The cubic root of 345225140 is about 701.5104391555.

Adding to 345225140 its reverse (41522543), we get a palindrome (386747683).

The spelling of 345225140 in words is "three hundred forty-five million, two hundred twenty-five thousand, one hundred forty".