34370021 has 12 divisors (see below), whose sum is σ = 40082400. Its totient is φ = 29385720.

The previous prime is 34369963. The next prime is 34370053. The reversal of 34370021 is 12007343.

It is not a de Polignac number, because 34370021 - 2⁶ = 34369957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34369975 and 34370002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34372021) 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, 28766 + ... + 29936.

It is an arithmetic number, because the mean of its divisors is an integer number (3340200).

Almost surely, 2^34370021 is an apocalyptic number.

It is an amenable number.

34370021 is a deficient number, since it is larger than the sum of its proper divisors (5712379).

34370021 is a wasteful number, since it uses less digits than its factorization.

34370021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1777 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 34370021 is about 5862.5950738559. The cubic root of 34370021 is about 325.1321624220.

Adding to 34370021 its reverse (12007343), we get a palindrome (46377364).

The spelling of 34370021 in words is "thirty-four million, three hundred seventy thousand, twenty-one".