8180442 has 24 divisors (see below), whose sum is σ = 17776980. Its totient is φ = 2718720.

The previous prime is 8180437. The next prime is 8180477. The reversal of 8180442 is 2440818.

It can be written as a sum of positive squares in 2 ways, for example, as 8173881 + 6561 = 2859^2 + 81^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11184 + ... + 11892.

Almost surely, 2^8180442 is an apocalyptic number.

8180442 is an abundant number, since it is smaller than the sum of its proper divisors (9596538).

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

8180442 is a wasteful number, since it uses less digits than its factorization.

8180442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358 (or 1355 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 8180442 is about 2860.1471990092. The cubic root of 8180442 is about 201.4925175834.

The spelling of 8180442 in words is "eight million, one hundred eighty thousand, four hundred forty-two".