2194857 has 40 divisors (see below), whose sum is σ = 3872000. Its totient is φ = 1238328.

The previous prime is 2194847. The next prime is 2194879. The reversal of 2194857 is 7584912.

It is not a de Polignac number, because 2194857 - 2¹⁵ = 2162089 is a prime.

It is a Duffinian number.

Its product of digits (20160) is a multiple of the sum of its prime factors (112).

It is not an unprimeable number, because it can be changed into a prime (2194847) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27744 + ... + 27822.

It is an arithmetic number, because the mean of its divisors is an integer number (96800).

2^2194857 is an apocalyptic number.

2194857 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2194857 is a deficient number, since it is larger than the sum of its proper divisors (1677143).

2194857 is an frugal number, since it uses more digits than its factorization.

2194857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 89 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 2194857 is about 1481.5049780544. The cubic root of 2194857 is about 129.9577180049.

The spelling of 2194857 in words is "two million, one hundred ninety-four thousand, eight hundred fifty-seven".