1264326428 has 24 divisors (see below), whose sum is σ = 2244338880. Its totient is φ = 623113920.

The previous prime is 1264326419. The next prime is 1264326451. The reversal of 1264326428 is 8246234621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1264326391 and 1264326400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205850 + ... + 211902.

It is an arithmetic number, because the mean of its divisors is an integer number (93514120).

Almost surely, 2^1264326428 is an apocalyptic number.

It is an amenable number.

1264326428 is a deficient number, since it is larger than the sum of its proper divisors (980012452).

1264326428 is a wasteful number, since it uses less digits than its factorization.

1264326428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6797 (or 6795 counting only the distinct ones).

The product of its digits is 110592, while the sum is 38.

The square root of 1264326428 is about 35557.3681253267. The cubic root of 1264326428 is about 1081.3171025080.

The spelling of 1264326428 in words is "one billion, two hundred sixty-four million, three hundred twenty-six thousand, four hundred twenty-eight".