1260433920 has 160 divisors (see below), whose sum is σ = 4049705088. Its totient is φ = 334430208.

The previous prime is 1260433919. The next prime is 1260433957. The reversal of 1260433920 is 293340621.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 2587917 + ... + 2588403.

Almost surely, 2^1260433920 is an apocalyptic number.

1260433920 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 1260433920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2024852544).

1260433920 is an abundant number, since it is smaller than the sum of its proper divisors (2789271168).

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

1260433920 is an equidigital number, since it uses as much as digits as its factorization.

1260433920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 1260433920 is about 35502.5903280310. The cubic root of 1260433920 is about 1080.2062706153.

The spelling of 1260433920 in words is "one billion, two hundred sixty million, four hundred thirty-three thousand, nine hundred twenty".