34161621 has 16 divisors (see below), whose sum is σ = 50098944. Its totient is φ = 20574144.

The previous prime is 34161607. The next prime is 34161629. The reversal of 34161621 is 12616143.

It is not a de Polignac number, because 34161621 - 2¹⁰ = 34160597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 34161591 and 34161600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34161629) 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 15 ways as a sum of consecutive naturals, for example, 7486 + ... + 11151.

It is an arithmetic number, because the mean of its divisors is an integer number (3131184).

Almost surely, 2^34161621 is an apocalyptic number.

It is an amenable number.

34161621 is a deficient number, since it is larger than the sum of its proper divisors (15937323).

34161621 is a wasteful number, since it uses less digits than its factorization.

34161621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18700.

The product of its digits is 864, while the sum is 24.

The square root of 34161621 is about 5844.7943505311. The cubic root of 34161621 is about 324.4736917410.

Adding to 34161621 its reverse (12616143), we get a palindrome (46777764).

The spelling of 34161621 in words is "thirty-four million, one hundred sixty-one thousand, six hundred twenty-one".