8144940 has 96 divisors (see below), whose sum is σ = 24514560. Its totient is φ = 2016000.

The previous prime is 8144933. The next prime is 8144951. The reversal of 8144940 is 494418.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8144898 and 8144907.

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, 53865 + ... + 54015.

It is an arithmetic number, because the mean of its divisors is an integer number (255360).

Almost surely, 2^8144940 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 8144940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12257280).

8144940 is an abundant number, since it is smaller than the sum of its proper divisors (16369620).

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

8144940 is a wasteful number, since it uses less digits than its factorization.

8144940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 8144940 is about 2853.9341267801. The cubic root of 8144940 is about 201.2006115706.

The spelling of 8144940 in words is "eight million, one hundred forty-four thousand, nine hundred forty".