34257636 has 72 divisors (see below), whose sum is σ = 100493120. Its totient is φ = 9637056.

The previous prime is 34257631. The next prime is 34257637. The reversal of 34257636 is 63675243.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 34257636.

It is not an unprimeable number, because it can be changed into a prime (34257631) 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, 15870 + ... + 17898.

Almost surely, 2^34257636 is an apocalyptic number.

34257636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34257636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50246560).

34257636 is an abundant number, since it is smaller than the sum of its proper divisors (66235484).

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

34257636 is a wasteful number, since it uses less digits than its factorization.

34257636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113 (or 2108 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 34257636 is about 5853.0023065090. The cubic root of 34257636 is about 324.7773970738. Note that the first 3 decimals are identical.

The spelling of 34257636 in words is "thirty-four million, two hundred fifty-seven thousand, six hundred thirty-six".