1305672764 has 36 divisors (see below), whose sum is σ = 2517453792. Its totient is φ = 592088640.

The previous prime is 1305672727. The next prime is 1305672793. The reversal of 1305672764 is 4672765031.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218237 + ... + 224139.

It is an arithmetic number, because the mean of its divisors is an integer number (69929272).

Almost surely, 2^1305672764 is an apocalyptic number.

It is an amenable number.

1305672764 is a deficient number, since it is larger than the sum of its proper divisors (1211781028).

1305672764 is a wasteful number, since it uses less digits than its factorization.

1305672764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6386 (or 6373 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 1305672764 is about 36134.0942047812. The cubic root of 1305672764 is about 1092.9780703853.

It can be divided in two parts, 130567 and 2764, that added together give a palindrome (133331).

The spelling of 1305672764 in words is "one billion, three hundred five million, six hundred seventy-two thousand, seven hundred sixty-four".