34639880 has 96 divisors (see below), whose sum is σ = 90924120. Its totient is φ = 11827200.

The previous prime is 34639849. The next prime is 34639883. The reversal of 34639880 is 8893643.

It can be written as a sum of positive squares in 4 ways, for example, as 21141604 + 13498276 = 4598^2 + 3674^2 .

It is not an unprimeable number, because it can be changed into a prime (34639883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82070 + ... + 82490.

Almost surely, 2^34639880 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 34639880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45462060).

34639880 is an abundant number, since it is smaller than the sum of its proper divisors (56284240).

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

34639880 is a wasteful number, since it uses less digits than its factorization.

34639880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 34639880 is about 5885.5653934010. The cubic root of 34639880 is about 325.9808788514.

The spelling of 34639880 in words is "thirty-four million, six hundred thirty-nine thousand, eight hundred eighty".