345672500 has 90 divisors (see below), whose sum is σ = 784591038. Its totient is φ = 133200000.

The previous prime is 345672499. The next prime is 345672521. The reversal of 345672500 is 5276543.

It can be written as a sum of positive squares in 15 ways, for example, as 148157584 + 197514916 = 12172^2 + 14054^2 .

It is a congruent number.

It is an unprimeable number.

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 29 ways as a sum of consecutive naturals, for example, 3422450 + ... + 3422550.

Almost surely, 2^345672500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345672500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392295519).

345672500 is an abundant number, since it is smaller than the sum of its proper divisors (438918538).

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

345672500 is a wasteful number, since it uses less digits than its factorization.

345672500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 345672500 is about 18592.2698990736. The cubic root of 345672500 is about 701.8133257970.

The spelling of 345672500 in words is "three hundred forty-five million, six hundred seventy-two thousand, five hundred".