7370021 has 8 divisors (see below), whose sum is σ = 7553304. Its totient is φ = 7188480.

The previous prime is 7370003. The next prime is 7370029. The reversal of 7370021 is 1200737.

It can be written as a sum of positive squares in 4 ways, for example, as 5152900 + 2217121 = 2270^2 + 1489^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7370021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7369975 and 7370002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7370029) 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 7 ways as a sum of consecutive naturals, for example, 12485 + ... + 13061.

It is an arithmetic number, because the mean of its divisors is an integer number (944163).

Almost surely, 2^7370021 is an apocalyptic number.

It is an amenable number.

7370021 is a deficient number, since it is larger than the sum of its proper divisors (183283).

7370021 is a wasteful number, since it uses less digits than its factorization.

7370021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 7370021 is about 2714.7782598216. The cubic root of 7370021 is about 194.6060070247.

Adding to 7370021 its reverse (1200737), we get a palindrome (8570758).

The spelling of 7370021 in words is "seven million, three hundred seventy thousand, twenty-one".