1366611028 has 12 divisors (see below), whose sum is σ = 2532249972. Its totient is φ = 643111040.

The previous prime is 1366611017. The next prime is 1366611049. The reversal of 1366611028 is 8201166631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 710329104 + 656281924 = 26652^2 + 25618^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 1366610984 and 1366611002.

It is a congruent number.

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, 10048543 + ... + 10048678.

It is an arithmetic number, because the mean of its divisors is an integer number (211020831).

Almost surely, 2^1366611028 is an apocalyptic number.

It is an amenable number.

1366611028 is a deficient number, since it is larger than the sum of its proper divisors (1165638944).

1366611028 is a wasteful number, since it uses less digits than its factorization.

1366611028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20097242 (or 20097240 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1366611028 is about 36967.7024982619. The cubic root of 1366611028 is about 1109.7239873202.

Adding to 1366611028 its reverse (8201166631), we get a palindrome (9567777659).

The spelling of 1366611028 in words is "one billion, three hundred sixty-six million, six hundred eleven thousand, twenty-eight".