346639132 has 36 divisors (see below), whose sum is σ = 708831480. Its totient is φ = 147891744.

The previous prime is 346639127. The next prime is 346639157. The reversal of 346639132 is 231936643.

It is a junction number, because it is equal to n+sod(n) for n = 346639091 and 346639100.

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 11 ways as a sum of consecutive naturals, for example, 41023 + ... + 48745.

Almost surely, 2^346639132 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 346639132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354415740).

346639132 is an abundant number, since it is smaller than the sum of its proper divisors (362192348).

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

346639132 is a wasteful number, since it uses less digits than its factorization.

346639132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7970 (or 7961 counting only the distinct ones).

The product of its digits is 69984, while the sum is 37.

The square root of 346639132 is about 18618.2472859289. The cubic root of 346639132 is about 702.4668961069.

The spelling of 346639132 in words is "three hundred forty-six million, six hundred thirty-nine thousand, one hundred thirty-two".