34450040 has 32 divisors (see below), whose sum is σ = 81594000. Its totient is φ = 13054464.

The previous prime is 34450019. The next prime is 34450043. The reversal of 34450040 is 4005443.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 34449994 and 34450021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34450043) 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, 21905 + ... + 23424.

Almost surely, 2^34450040 is an apocalyptic number.

It is an amenable number.

34450040 is an abundant number, since it is smaller than the sum of its proper divisors (47143960).

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

34450040 is a wasteful number, since it uses less digits than its factorization.

34450040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45359 (or 45355 counting only the distinct ones).

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

The square root of 34450040 is about 5869.4156438269. The cubic root of 34450040 is about 325.3842870489.

Adding to 34450040 its reverse (4005443), we get a palindrome (38455483).

The spelling of 34450040 in words is "thirty-four million, four hundred fifty thousand, forty".