34772720 has 20 divisors (see below), whose sum is σ = 80846760. Its totient is φ = 13909056.

The previous prime is 34772713. The next prime is 34772723. The reversal of 34772720 is 2727743.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34772723) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 217250 + ... + 217409.

It is an arithmetic number, because the mean of its divisors is an integer number (4042338).

Almost surely, 2^34772720 is an apocalyptic number.

It is an amenable number.

34772720 is an abundant number, since it is smaller than the sum of its proper divisors (46074040).

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

34772720 is a wasteful number, since it uses less digits than its factorization.

34772720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434672 (or 434666 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 34772720 is about 5896.8398316386. The cubic root of 34772720 is about 326.3970471827.

The spelling of 34772720 in words is "thirty-four million, seven hundred seventy-two thousand, seven hundred twenty".