34728681 has 32 divisors (see below), whose sum is σ = 52553088. Its totient is φ = 20252160.

The previous prime is 34728653. The next prime is 34728691. The reversal of 34728681 is 18682743.

34728681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 34728681 - 2⁷ = 34728553 is a prime.

It is a super-2 number, since 2×34728681² = 2412162567999522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (34728691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58870 + ... + 59456.

It is an arithmetic number, because the mean of its divisors is an integer number (1642284).

Almost surely, 2^34728681 is an apocalyptic number.

It is an amenable number.

34728681 is a deficient number, since it is larger than the sum of its proper divisors (17824407).

34728681 is a wasteful number, since it uses less digits than its factorization.

34728681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681.

The product of its digits is 64512, while the sum is 39.

The square root of 34728681 is about 5893.1045298722. The cubic root of 34728681 is about 326.2591970514.

The spelling of 34728681 in words is "thirty-four million, seven hundred twenty-eight thousand, six hundred eighty-one".