1161367872 has 224 divisors, whose sum is σ = 3686860800. Its totient is φ = 315635712.

The previous prime is 1161367871. The next prime is 1161367891. The reversal of 1161367872 is 2787631611.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×1161367872² = 2697550668227616768, which contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161367871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3234829 + ... + 3235187.

It is an arithmetic number, because the mean of its divisors is an integer number (16459200).

Almost surely, 2^1161367872 is an apocalyptic number.

1161367872 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 1161367872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1843430400).

1161367872 is an abundant number, since it is smaller than the sum of its proper divisors (2525492928).

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

1161367872 is a wasteful number, since it uses less digits than its factorization.

1161367872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 483 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 1161367872 is about 34078.8478678491. The cubic root of 1161367872 is about 1051.1304143221.

The spelling of 1161367872 in words is "one billion, one hundred sixty-one million, three hundred sixty-seven thousand, eight hundred seventy-two".