8161488 has 90 divisors (see below), whose sum is σ = 24259794. Its totient is φ = 2560896.

The previous prime is 8161487. The next prime is 8161493. The reversal of 8161488 is 8841618.

It can be written as a sum of positive squares in only one way, i.e., 6290064 + 1871424 = 2508^2 + 1368^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 (8161487) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 51906 + ... + 52062.

Almost surely, 2^8161488 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 8161488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12129897).

8161488 is an abundant number, since it is smaller than the sum of its proper divisors (16098306).

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

8161488 is a wasteful number, since it uses less digits than its factorization.

8161488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 181 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The square root of 8161488 is about 2856.8318116403. The cubic root of 8161488 is about 201.3367785424.

It can be divided in two parts, 8161 and 488, that added together give a square (8649 = 93²).

The spelling of 8161488 in words is "eight million, one hundred sixty-one thousand, four hundred eighty-eight".