1061512240 has 80 divisors (see below), whose sum is σ = 2576710080. Its totient is φ = 406287360.

The previous prime is 1061512237. The next prime is 1061512271. The reversal of 1061512240 is 422151601.

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

It is a super-2 number, since 2×1061512240² = 2253616471339635200, which contains 22 as substring.

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, 177621 + ... + 183499.

It is an arithmetic number, because the mean of its divisors is an integer number (32208876).

Almost surely, 2^1061512240 is an apocalyptic number.

1061512240 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 1061512240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288355040).

1061512240 is an abundant number, since it is smaller than the sum of its proper divisors (1515197840).

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

1061512240 is a wasteful number, since it uses less digits than its factorization.

1061512240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990 (or 5984 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1061512240 is about 32580.8569561944. The cubic root of 1061512240 is about 1020.0974660163.

Adding to 1061512240 its reverse (422151601), we get a palindrome (1483663841).

The spelling of 1061512240 in words is "one billion, sixty-one million, five hundred twelve thousand, two hundred forty".