1264028788 has 12 divisors (see below), whose sum is σ = 2413145952. Its totient is φ = 574558520.

The previous prime is 1264028749. The next prime is 1264028807. The reversal of 1264028788 is 8878204621.

It is a happy number.

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, 14363920 + ... + 14364007.

It is an arithmetic number, because the mean of its divisors is an integer number (201095496).

Almost surely, 2^1264028788 is an apocalyptic number.

It is an amenable number.

1264028788 is a deficient number, since it is larger than the sum of its proper divisors (1149117164).

1264028788 is a wasteful number, since it uses less digits than its factorization.

1264028788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28727942 (or 28727940 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 1264028788 is about 35553.1825298383. The cubic root of 1264028788 is about 1081.2322434942.

The spelling of 1264028788 in words is "one billion, two hundred sixty-four million, twenty-eight thousand, seven hundred eighty-eight".