34102640 has 120 divisors (see below), whose sum is σ = 94202304. Its totient is φ = 11404800.

The previous prime is 34102619. The next prime is 34102657. The reversal of 34102640 is 4620143.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125705 + ... + 125975.

Almost surely, 2^34102640 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 34102640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47101152).

34102640 is an abundant number, since it is smaller than the sum of its proper divisors (60099664).

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

34102640 is a wasteful number, since it uses less digits than its factorization.

34102640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 34102640 is about 5839.7465698436. The cubic root of 34102640 is about 324.2868465152.

Adding to 34102640 its reverse (4620143), we get a palindrome (38722783).

The spelling of 34102640 in words is "thirty-four million, one hundred two thousand, six hundred forty".