34009720 has 16 divisors (see below), whose sum is σ = 76521960. Its totient is φ = 13603872.

The previous prime is 34009693. The next prime is 34009727. The reversal of 34009720 is 2790043.

It is a super-2 number, since 2×34009720² = 2313322108956800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34009727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425082 + ... + 425161.

Almost surely, 2^34009720 is an apocalyptic number.

It is an amenable number.

34009720 is an abundant number, since it is smaller than the sum of its proper divisors (42512240).

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

34009720 is a wasteful number, since it uses less digits than its factorization.

34009720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850254 (or 850250 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 34009720 is about 5831.7853184081. The cubic root of 34009720 is about 323.9920487811.

Adding to 34009720 its reverse (2790043), we get a palindrome (36799763).

The spelling of 34009720 in words is "thirty-four million, nine thousand, seven hundred twenty".