1270489752 has 128 divisors (see below), whose sum is σ = 4071513600. Its totient is φ = 359558784.

The previous prime is 1270489751. The next prime is 1270489769. The reversal of 1270489752 is 2579840721.

It is a happy number.

It is a super-2 number, since 2×1270489752² = 3228288419874043008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1270489698 and 1270489707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270489751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157858 + ... + 165710.

It is an arithmetic number, because the mean of its divisors is an integer number (31808700).

Almost surely, 2^1270489752 is an apocalyptic number.

1270489752 is a gapful number since it is divisible by the number (12) 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 1270489752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2035756800).

1270489752 is an abundant number, since it is smaller than the sum of its proper divisors (2801023848).

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

1270489752 is a wasteful number, since it uses less digits than its factorization.

1270489752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7982 (or 7972 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 1270489752 is about 35643.9300863415. The cubic root of 1270489752 is about 1083.0713191882.

The spelling of 1270489752 in words is "one billion, two hundred seventy million, four hundred eighty-nine thousand, seven hundred fifty-two".