1263872472 has 32 divisors (see below), whose sum is σ = 3161814000. Its totient is φ = 421006464.

The previous prime is 1263872431. The next prime is 1263872509. The reversal of 1263872472 is 2742783621.

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 7 ways as a sum of consecutive naturals, for example, 20178 + ... + 54174.

Almost surely, 2^1263872472 is an apocalyptic number.

1263872472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1263872472 is an abundant number, since it is smaller than the sum of its proper divisors (1897941528).

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

1263872472 is a wasteful number, since it uses less digits than its factorization.

1263872472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35555 (or 35551 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 1263872472 is about 35550.9841213995. The cubic root of 1263872472 is about 1081.1876714960.

The spelling of 1263872472 in words is "one billion, two hundred sixty-three million, eight hundred seventy-two thousand, four hundred seventy-two".