34820720 has 40 divisors (see below), whose sum is σ = 88320240. Its totient is φ = 12661760.

The previous prime is 34820707. The next prime is 34820729. The reversal of 34820720 is 2702843.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 34820720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34820729) 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, 18905 + ... + 20664.

It is an arithmetic number, because the mean of its divisors is an integer number (2208006).

Almost surely, 2^34820720 is an apocalyptic number.

It is an amenable number.

34820720 is an abundant number, since it is smaller than the sum of its proper divisors (53499520).

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

34820720 is a wasteful number, since it uses less digits than its factorization.

34820720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39593 (or 39587 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 34820720 is about 5900.9084046442. The cubic root of 34820720 is about 326.5471634701.

The spelling of 34820720 in words is "thirty-four million, eight hundred twenty thousand, seven hundred twenty".