34644240 has 160 divisors (see below), whose sum is σ = 122432640. Its totient is φ = 8999424.

The previous prime is 34644227. The next prime is 34644251. The reversal of 34644240 is 4244643.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92694 + ... + 93066.

It is an arithmetic number, because the mean of its divisors is an integer number (765204).

Almost surely, 2^34644240 is an apocalyptic number.

34644240 is a gapful number since it is divisible by the number (30) 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 34644240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61216320).

34644240 is an abundant number, since it is smaller than the sum of its proper divisors (87788400).

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

34644240 is a wasteful number, since it uses less digits than its factorization.

34644240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 34644240 is about 5885.9357794662. The cubic root of 34644240 is about 325.9945549670.

Adding to 34644240 its reverse (4244643), we get a palindrome (38888883).

The spelling of 34644240 in words is "thirty-four million, six hundred forty-four thousand, two hundred forty".