34687818 has 64 divisors (see below), whose sum is σ = 87782400. Its totient is φ = 10050480.

The previous prime is 34687817. The next prime is 34687823. The reversal of 34687818 is 81878643.

It is a super-2 number, since 2×34687818² = 2406489435202248, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (34687813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12393 + ... + 14931.

It is an arithmetic number, because the mean of its divisors is an integer number (1371600).

Almost surely, 2^34687818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34687818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43891200).

34687818 is an abundant number, since it is smaller than the sum of its proper divisors (53094582).

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

34687818 is a wasteful number, since it uses less digits than its factorization.

34687818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584 (or 2578 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 34687818 is about 5889.6364913295. The cubic root of 34687818 is about 326.1311841089.

The spelling of 34687818 in words is "thirty-four million, six hundred eighty-seven thousand, eight hundred eighteen".