34620021 has 16 divisors (see below), whose sum is σ = 51868800. Its totient is φ = 22819104.

The previous prime is 34620017. The next prime is 34620023. The reversal of 34620021 is 12002643.

It is a happy number.

It is not a de Polignac number, because 34620021 - 2² = 34620017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 34619976 and 34620003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34620023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4801 + ... + 9606.

It is an arithmetic number, because the mean of its divisors is an integer number (3241800).

Almost surely, 2^34620021 is an apocalyptic number.

It is an amenable number.

34620021 is a deficient number, since it is larger than the sum of its proper divisors (17248779).

34620021 is a wasteful number, since it uses less digits than its factorization.

34620021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14505 (or 14499 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 34620021 is about 5883.8780578799. The cubic root of 34620021 is about 325.9185721327.

Adding to 34620021 its reverse (12002643), we get a palindrome (46622664).

The spelling of 34620021 in words is "thirty-four million, six hundred twenty thousand, twenty-one".