1264228536 has 64 divisors (see below), whose sum is σ = 3331036800. Its totient is φ = 398736000.

The previous prime is 1264228529. The next prime is 1264228571. The reversal of 1264228536 is 6358224621.

Its product of digits (138240) is a multiple of the sum of its prime divisors (3456).

It is a junction number, because it is equal to n+sod(n) for n = 1264228494 and 1264228503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 592191 + ... + 594321.

It is an arithmetic number, because the mean of its divisors is an integer number (52047450).

Almost surely, 2^1264228536 is an apocalyptic number.

It is an amenable number.

1264228536 is an abundant number, since it is smaller than the sum of its proper divisors (2066808264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1264228536 is a wasteful number, since it uses less digits than its factorization.

1264228536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460 (or 3456 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 1264228536 is about 35555.9915626045. The cubic root of 1264228536 is about 1081.2891943603.

The spelling of 1264228536 in words is "one billion, two hundred sixty-four million, two hundred twenty-eight thousand, five hundred thirty-six".