1020272866 has 4 divisors (see below), whose sum is σ = 1530409302. Its totient is φ = 510136432.

The previous prime is 1020272831. The next prime is 1020272879. The reversal of 1020272866 is 6682720201.

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

It can be written as a sum of positive squares in only one way, i.e., 999887641 + 20385225 = 31621^2 + 4515^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255068215 + ... + 255068218.

Almost surely, 2^1020272866 is an apocalyptic number.

1020272866 is a deficient number, since it is larger than the sum of its proper divisors (510136436).

1020272866 is an equidigital number, since it uses as much as digits as its factorization.

1020272866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510136435.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 1020272866 is about 31941.7104426172. The cubic root of 1020272866 is about 1006.7124640120.

The spelling of 1020272866 in words is "one billion, twenty million, two hundred seventy-two thousand, eight hundred sixty-six".