1270045520 has 80 divisors (see below), whose sum is σ = 3202951248. Its totient is φ = 466452480.

The previous prime is 1270045507. The next prime is 1270045529. The reversal of 1270045520 is 255400721.

It can be written as a sum of positive squares in 8 ways, for example, as 976144 + 1269069376 = 988^2 + 35624^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1270045520² = 3226031245744140800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1270045520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270045529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44372 + ... + 67148.

Almost surely, 2^1270045520 is an apocalyptic number.

1270045520 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 1270045520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1601475624).

1270045520 is an abundant number, since it is smaller than the sum of its proper divisors (1932905728).

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

1270045520 is a wasteful number, since it uses less digits than its factorization.

1270045520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22848 (or 22842 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 1270045520 is about 35637.6980176891. The cubic root of 1270045520 is about 1082.9450710162.

The spelling of 1270045520 in words is "one billion, two hundred seventy million, forty-five thousand, five hundred twenty".