1269478080 has 336 divisors, whose sum is σ = 4822874784. Its totient is φ = 304496640.

The previous prime is 1269478079. The next prime is 1269478087. The reversal of 1269478080 is 808749621.

It is a super-2 number, since 2×1269478080² = 3223149191200972800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1269478087) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1534627 + ... + 1535453.

It is an arithmetic number, because the mean of its divisors is an integer number (14353794).

Almost surely, 2^1269478080 is an apocalyptic number.

1269478080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1269478080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2411437392).

1269478080 is an abundant number, since it is smaller than the sum of its proper divisors (3553396704).

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

1269478080 is a wasteful number, since it uses less digits than its factorization.

1269478080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1269478080 is about 35629.7358957374. The cubic root of 1269478080 is about 1082.7837650152.

The spelling of 1269478080 in words is "one billion, two hundred sixty-nine million, four hundred seventy-eight thousand, eighty".