34405400 has 24 divisors (see below), whose sum is σ = 79993020. Its totient is φ = 13762080.

The previous prime is 34405391. The next prime is 34405417. The reversal of 34405400 is 450443.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85814 + ... + 86213.

Almost surely, 2^34405400 is an apocalyptic number.

It is an amenable number.

34405400 is an abundant number, since it is smaller than the sum of its proper divisors (45587620).

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

34405400 is a wasteful number, since it uses less digits than its factorization.

34405400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172043 (or 172034 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 34405400 is about 5865.6116475607. The cubic root of 34405400 is about 325.2436831199.

Adding to 34405400 its reverse (450443), we get a palindrome (34855843).

The spelling of 34405400 in words is "thirty-four million, four hundred five thousand, four hundred".