7221902 has 4 divisors (see below), whose sum is σ = 10832856. Its totient is φ = 3610950.

The previous prime is 7221871. The next prime is 7221911. The reversal of 7221902 is 2091227.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805474 + ... + 1805477.

It is an arithmetic number, because the mean of its divisors is an integer number (2708214).

Almost surely, 2^7221902 is an apocalyptic number.

7221902 is a deficient number, since it is larger than the sum of its proper divisors (3610954).

7221902 is a wasteful number, since it uses less digits than its factorization.

7221902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610953.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 7221902 is about 2687.3596707549. The cubic root of 7221902 is about 193.2934763921.

The spelling of 7221902 in words is "seven million, two hundred twenty-one thousand, nine hundred two".