34350021 has 8 divisors (see below), whose sum is σ = 50888960. Its totient is φ = 22899996.

The previous prime is 34349993. The next prime is 34350031. The reversal of 34350021 is 12005343.

It is not a de Polignac number, because 34350021 - 2⁹ = 34349509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34349976 and 34350003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34350031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636085 + ... + 636138.

It is an arithmetic number, because the mean of its divisors is an integer number (6361120).

Almost surely, 2^34350021 is an apocalyptic number.

It is an amenable number.

34350021 is a deficient number, since it is larger than the sum of its proper divisors (16538939).

34350021 is a wasteful number, since it uses less digits than its factorization.

34350021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272232 (or 1272226 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 34350021 is about 5860.8890963744. The cubic root of 34350021 is about 325.0690851163.

Adding to 34350021 its reverse (12005343), we get a palindrome (46355364).

The spelling of 34350021 in words is "thirty-four million, three hundred fifty thousand, twenty-one".