1261513032 has 64 divisors (see below), whose sum is σ = 3407564160. Its totient is φ = 386880000.

The previous prime is 1261513013. The next prime is 1261513063. The reversal of 1261513032 is 2303151621.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1261512993 and 1261513011.

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, 90532 + ... + 103532.

It is an arithmetic number, because the mean of its divisors is an integer number (53243190).

Almost surely, 2^1261513032 is an apocalyptic number.

1261513032 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 1261513032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1703782080).

1261513032 is an abundant number, since it is smaller than the sum of its proper divisors (2146051128).

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

1261513032 is a wasteful number, since it uses less digits than its factorization.

1261513032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13334 (or 13330 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1261513032 is about 35517.7847282175. The cubic root of 1261513032 is about 1080.5144531204.

Adding to 1261513032 its reverse (2303151621), we get a palindrome (3564664653).

The spelling of 1261513032 in words is "one billion, two hundred sixty-one million, five hundred thirteen thousand, thirty-two".