34520040 has 64 divisors (see below), whose sum is σ = 115070400. Its totient is φ = 9205056.

The previous prime is 34520039. The next prime is 34520041. The reversal of 34520040 is 4002543.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (34520039) and next prime (34520041).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 34519995 and 34520022.

It is not an unprimeable number, because it can be changed into a prime (34520041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14902 + ... + 17061.

It is an arithmetic number, because the mean of its divisors is an integer number (1797975).

Almost surely, 2^34520040 is an apocalyptic number.

34520040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

34520040 is an abundant number, since it is smaller than the sum of its proper divisors (80550360).

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

34520040 is a wasteful number, since it uses less digits than its factorization.

34520040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31983 (or 31973 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 34520040 is about 5875.3757326660. The cubic root of 34520040 is about 325.6045237596.

Adding to 34520040 its reverse (4002543), we get a palindrome (38522583).

The spelling of 34520040 in words is "thirty-four million, five hundred twenty thousand, forty".