34512240 has 80 divisors (see below), whose sum is σ = 122277888. Its totient is φ = 7888128.

The previous prime is 34512209. The next prime is 34512251. The reversal of 34512240 is 4221543.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8592 + ... + 11951.

Almost surely, 2^34512240 is an apocalyptic number.

34512240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

34512240 is an abundant number, since it is smaller than the sum of its proper divisors (87765648).

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

34512240 is a wasteful number, since it uses less digits than its factorization.

34512240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20566 (or 20560 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 34512240 is about 5874.7119078300. The cubic root of 34512240 is about 325.5799978456.

Adding to 34512240 its reverse (4221543), we get a palindrome (38733783).

The spelling of 34512240 in words is "thirty-four million, five hundred twelve thousand, two hundred forty".