34209372 has 72 divisors (see below), whose sum is σ = 88630416. Its totient is φ = 10233344.

The previous prime is 34209361. The next prime is 34209377. The reversal of 34209372 is 27390243.

It is a super-2 number, since 2×34209372² = 2340562265268768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34209377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107758 + ... + 108074.

It is an arithmetic number, because the mean of its divisors is an integer number (1230978).

Almost surely, 2^34209372 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 34209372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44315208).

34209372 is an abundant number, since it is smaller than the sum of its proper divisors (54421044).

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

34209372 is a wasteful number, since it uses less digits than its factorization.

34209372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 34209372 is about 5848.8778410905. The cubic root of 34209372 is about 324.6248041031.

The spelling of 34209372 in words is "thirty-four million, two hundred nine thousand, three hundred seventy-two".