861913248 has 96 divisors (see below), whose sum is σ = 2610123264. Its totient is φ = 243939072.

The previous prime is 861913231. The next prime is 861913253. The reversal of 861913248 is 842319168.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 65911 + ... + 77897.

It is an arithmetic number, because the mean of its divisors is an integer number (27188784).

Almost surely, 2^861913248 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 861913248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1305061632).

861913248 is an abundant number, since it is smaller than the sum of its proper divisors (1748210016).

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

861913248 is a wasteful number, since it uses less digits than its factorization.

861913248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12114 (or 12106 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 861913248 is about 29358.3590822103. The cubic root of 861913248 is about 951.6732277731.

The spelling of 861913248 in words is "eight hundred sixty-one million, nine hundred thirteen thousand, two hundred forty-eight".