1115257612 has 96 divisors (see below), whose sum is σ = 2370830336. Its totient is φ = 449064000.

The previous prime is 1115257609. The next prime is 1115257621. The reversal of 1115257612 is 2167525111.

It is a super-2 number, since 2×1115257612² = 2487599082247885088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7385737 + ... + 7385887.

Almost surely, 2^1115257612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115257612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1185415168).

1115257612 is an abundant number, since it is smaller than the sum of its proper divisors (1255572724).

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

1115257612 is a wasteful number, since it uses less digits than its factorization.

1115257612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 385 counting only the distinct ones).

The product of its digits is 4200, while the sum is 31.

The square root of 1115257612 is about 33395.4729267307. The cubic root of 1115257612 is about 1037.0309834774.

The spelling of 1115257612 in words is "one billion, one hundred fifteen million, two hundred fifty-seven thousand, six hundred twelve".