1260247428 has 108 divisors (see below), whose sum is σ = 3686089680. Its totient is φ = 361769760.

The previous prime is 1260247423. The next prime is 1260247453. The reversal of 1260247428 is 8247420621.

1260247428 is a `hidden beast` number, since 1 + 2 + 602 + 4 + 7 + 42 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1260247392 and 1260247401.

It is not an unprimeable number, because it can be changed into a prime (1260247423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 75151 + ... + 90377.

It is an arithmetic number, because the mean of its divisors is an integer number (34130460).

Almost surely, 2^1260247428 is an apocalyptic number.

1260247428 is a gapful number since it is divisible by the number (18) 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 1260247428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1843044840).

1260247428 is an abundant number, since it is smaller than the sum of its proper divisors (2425842252).

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

1260247428 is a wasteful number, since it uses less digits than its factorization.

1260247428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15278 (or 15262 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 1260247428 is about 35499.9637746294. The cubic root of 1260247428 is about 1080.1529927293.

The spelling of 1260247428 in words is "one billion, two hundred sixty million, two hundred forty-seven thousand, four hundred twenty-eight".