1229263960 has 16 divisors (see below), whose sum is σ = 2765844000. Its totient is φ = 491705568.

The previous prime is 1229263949. The next prime is 1229263961. The reversal of 1229263960 is 693629221.

It is a super-2 number, since 2×1229263960² = 3022179766709763200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 30731599 = 1229263960 / (1 + 2 + 2 + 9 + 2 + 6 + 3 + 9 + 6 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229263961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15365760 + ... + 15365839.

It is an arithmetic number, because the mean of its divisors is an integer number (172865250).

Almost surely, 2^1229263960 is an apocalyptic number.

1229263960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1229263960 is an abundant number, since it is smaller than the sum of its proper divisors (1536580040).

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

1229263960 is a wasteful number, since it uses less digits than its factorization.

1229263960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30731610 (or 30731606 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 1229263960 is about 35060.8607994727. The cubic root of 1229263960 is about 1071.2275079048.

The spelling of 1229263960 in words is "one billion, two hundred twenty-nine million, two hundred sixty-three thousand, nine hundred sixty".