66202028 has 12 divisors (see below), whose sum is σ = 118984992. Its totient is φ = 32206320.

The previous prime is 66202013. The next prime is 66202049. The reversal of 66202028 is 82020266.

It is a super-2 number, since 2×66202028² = 8765417022625568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66201988 and 66202006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223508 + ... + 223803.

It is an arithmetic number, because the mean of its divisors is an integer number (9915416).

Almost surely, 2^66202028 is an apocalyptic number.

It is an amenable number.

66202028 is a deficient number, since it is larger than the sum of its proper divisors (52782964).

66202028 is a wasteful number, since it uses less digits than its factorization.

66202028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447352 (or 447350 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 66202028 is about 8136.4628678560. The cubic root of 66202028 is about 404.5359273146.

The spelling of 66202028 in words is "sixty-six million, two hundred two thousand, twenty-eight".