345421692 has 192 divisors, whose sum is σ = 1133798400. Its totient is φ = 88335360.

The previous prime is 345421673. The next prime is 345421693. The reversal of 345421692 is 296124543.

It is a happy number.

It is a super-2 number, since 2×345421692² = 238632290608285728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345421693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 606784 + ... + 607352.

It is an arithmetic number, because the mean of its divisors is an integer number (5905200).

Almost surely, 2^345421692 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 345421692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566899200).

345421692 is an abundant number, since it is smaller than the sum of its proper divisors (788376708).

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

345421692 is a wasteful number, since it uses less digits than its factorization.

345421692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 665 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 345421692 is about 18585.5237214344. The cubic root of 345421692 is about 701.6435475770.

The spelling of 345421692 in words is "three hundred forty-five million, four hundred twenty-one thousand, six hundred ninety-two".