865126416 has 160 divisors (see below), whose sum is σ = 2907813888. Its totient is φ = 214917120.

The previous prime is 865126403. The next prime is 865126421. The reversal of 865126416 is 614621568.

It is a happy number.

It is a super-2 number, since 2×865126416² = 1496887431322010112, which contains 22 as substring.

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, 79920 + ... + 90096.

Almost surely, 2^865126416 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 865126416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1453906944).

865126416 is an abundant number, since it is smaller than the sum of its proper divisors (2042687472).

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

865126416 is a wasteful number, since it uses less digits than its factorization.

865126416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10229 (or 10223 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 865126416 is about 29413.0313976645. The cubic root of 865126416 is about 952.8543574437.

The spelling of 865126416 in words is "eight hundred sixty-five million, one hundred twenty-six thousand, four hundred sixteen".