34155240 has 128 divisors (see below), whose sum is σ = 118920960. Its totient is φ = 7686144.

The previous prime is 34155223. The next prime is 34155241. The reversal of 34155240 is 4255143.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 34155240.

It is not an unprimeable number, because it can be changed into a prime (34155241) 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, 61042 + ... + 61598.

It is an arithmetic number, because the mean of its divisors is an integer number (929070).

Almost surely, 2^34155240 is an apocalyptic number.

34155240 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 34155240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59460480).

34155240 is an abundant number, since it is smaller than the sum of its proper divisors (84765720).

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

34155240 is a wasteful number, since it uses less digits than its factorization.

34155240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 34155240 is about 5844.2484546775. The cubic root of 34155240 is about 324.4534878250.

The spelling of 34155240 in words is "thirty-four million, one hundred fifty-five thousand, two hundred forty".