34445520 has 160 divisors (see below), whose sum is σ = 122135040. Its totient is φ = 8916480.

The previous prime is 34445503. The next prime is 34445527. The reversal of 34445520 is 2554443.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34445527) 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, 79705 + ... + 80135.

It is an arithmetic number, because the mean of its divisors is an integer number (763344).

Almost surely, 2^34445520 is an apocalyptic number.

34445520 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 34445520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61067520).

34445520 is an abundant number, since it is smaller than the sum of its proper divisors (87689520).

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

34445520 is a wasteful number, since it uses less digits than its factorization.

34445520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 34445520 is about 5869.0305843470. The cubic root of 34445520 is about 325.3700557998.

Adding to 34445520 its reverse (2554443), we get a palindrome (36999963).

The spelling of 34445520 in words is "thirty-four million, four hundred forty-five thousand, five hundred twenty".