34407640 has 32 divisors (see below), whose sum is σ = 77586480. Its totient is φ = 13732992.

The previous prime is 34407623. The next prime is 34407641. The reversal of 34407640 is 4670443.

It is a junction number, because it is equal to n+sod(n) for n = 34407599 and 34407608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34407641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30934 + ... + 32026.

Almost surely, 2^34407640 is an apocalyptic number.

It is an amenable number.

34407640 is an abundant number, since it is smaller than the sum of its proper divisors (43178840).

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

34407640 is a wasteful number, since it uses less digits than its factorization.

34407640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891 (or 1887 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 34407640 is about 5865.8025878817. The cubic root of 34407640 is about 325.2507414115.

The spelling of 34407640 in words is "thirty-four million, four hundred seven thousand, six hundred forty".