34521872 has 60 divisors (see below), whose sum is σ = 84900816. Its totient is φ = 13446720.

The previous prime is 34521871. The next prime is 34521881. The reversal of 34521872 is 27812543.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (34521871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6623 + ... + 10625.

Almost surely, 2^34521872 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 34521872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42450408).

34521872 is an abundant number, since it is smaller than the sum of its proper divisors (50378944).

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

34521872 is a wasteful number, since it uses less digits than its factorization.

34521872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036 (or 4023 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 34521872 is about 5875.5316355203. The cubic root of 34521872 is about 325.6102836693.

The spelling of 34521872 in words is "thirty-four million, five hundred twenty-one thousand, eight hundred seventy-two".