34247440 has 20 divisors (see below), whose sum is σ = 79625484. Its totient is φ = 13698944.

The previous prime is 34247429. The next prime is 34247453. The reversal of 34247440 is 4474243.

It can be written as a sum of positive squares in 2 ways, for example, as 17338896 + 16908544 = 4164^2 + 4112^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 34247399 and 34247408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213967 + ... + 214126.

Almost surely, 2^34247440 is an apocalyptic number.

It is an amenable number.

34247440 is an abundant number, since it is smaller than the sum of its proper divisors (45378044).

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

34247440 is a wasteful number, since it uses less digits than its factorization.

34247440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428106 (or 428100 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 34247440 is about 5852.1312357123. The cubic root of 34247440 is about 324.7451730278.

The spelling of 34247440 in words is "thirty-four million, two hundred forty-seven thousand, four hundred forty".