34415721 has 12 divisors (see below), whose sum is σ = 51426180. Its totient is φ = 22152480.

The previous prime is 34415713. The next prime is 34415729. The reversal of 34415721 is 12751443.

It is an interprime number because it is at equal distance from previous prime (34415713) and next prime (34415729).

It can be written as a sum of positive squares in 2 ways, for example, as 8037225 + 26378496 = 2835^2 + 5136^2 .

It is not a de Polignac number, because 34415721 - 2³ = 34415713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (34415729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65670 + ... + 66191.

It is an arithmetic number, because the mean of its divisors is an integer number (4285515).

Almost surely, 2^34415721 is an apocalyptic number.

It is an amenable number.

34415721 is a deficient number, since it is larger than the sum of its proper divisors (17010459).

34415721 is a wasteful number, since it uses less digits than its factorization.

34415721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131896 (or 131893 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 34415721 is about 5866.4913704871. The cubic root of 34415721 is about 325.2762022830.

The spelling of 34415721 in words is "thirty-four million, four hundred fifteen thousand, seven hundred twenty-one".