56167890 has 32 divisors (see below), whose sum is σ = 137941056. Its totient is φ = 14629440.

The previous prime is 56167889. The next prime is 56167897. The reversal of 56167890 is 9876165.

56167890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (56167897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20481 + ... + 23060.

It is an arithmetic number, because the mean of its divisors is an integer number (4310658).

Almost surely, 2^56167890 is an apocalyptic number.

56167890 is an abundant number, since it is smaller than the sum of its proper divisors (81773166).

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

56167890 is a wasteful number, since it uses less digits than its factorization.

56167890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43594.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 56167890 is about 7494.5240008956. The cubic root of 56167890 is about 382.9681908379.

The spelling of 56167890 in words is "fifty-six million, one hundred sixty-seven thousand, eight hundred ninety".