34023440 has 120 divisors (see below), whose sum is σ = 92297664. Its totient is φ = 11545600.

The previous prime is 34023439. The next prime is 34023487. The reversal of 34023440 is 4432043.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 829820 + ... + 829860.

Almost surely, 2^34023440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34023440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46148832).

34023440 is an abundant number, since it is smaller than the sum of its proper divisors (58274224).

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

34023440 is a wasteful number, since it uses less digits than its factorization.

34023440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 34023440 is about 5832.9615119594. The cubic root of 34023440 is about 324.0356105756.

Adding to 34023440 its reverse (4432043), we get a palindrome (38455483).

The spelling of 34023440 in words is "thirty-four million, twenty-three thousand, four hundred forty".