8161404 has 24 divisors (see below), whose sum is σ = 19329408. Its totient is φ = 2679600.

The previous prime is 8161403. The next prime is 8161427. The reversal of 8161404 is 4041618.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8161403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4272 + ... + 5879.

It is an arithmetic number, because the mean of its divisors is an integer number (805392).

Almost surely, 2^8161404 is an apocalyptic number.

It is an amenable number.

8161404 is an abundant number, since it is smaller than the sum of its proper divisors (11168004).

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

8161404 is a wasteful number, since it uses less digits than its factorization.

8161404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10225 (or 10223 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 8161404 is about 2856.8171100020. The cubic root of 8161404 is about 201.3360878045.

The spelling of 8161404 in words is "eight million, one hundred sixty-one thousand, four hundred four".